Update git submodules

* Update src/sonic-telemetry from branch 'broadcom_sonic'
  to 31c54a162e0707830cefcad5cf99451c293095f4
  - [JIRA SONIC-10470]merge sonic-telemetry dell_sonic --> broadcom_sonic 11112019
    
    Change-Id: I2ae9fe6f9a60937ad178c3a930308ea046cad51e
    
  - Merge pull request sonic-net#43 from project-arlo/gnoi_ConfigManagement
    
    Add config mgmt gNOI RPCs, rename sonic gNOI proto file
  - Merge pull request sonic-net#42 from project-arlo/gnoi_techsupport
    
    Gnoi techsupport
  - Add config mgmt gNOI RPCs, rename sonic gNOI proto file
    
  - Merge remote-tracking branch 'github/master' into gnoi_techsupport
    
  - Merge pull request sonic-net#41 from project-arlo/gnmi_set_prefix
    
    Add prefix support to gnmi_set
  - Merge pull request sonic-net#40 from project-arlo/updates_only
    
    Updates only
  - Merge pull request sonic-net#39 from project-arlo/username_password_support
    
    Username password support
  - Make same changes for show-techsupport proto
    
  - Add sonic-tests:sum rpc for example
    
  - wip
    
  - Initial support for showTechSupport rpc
    
  - Add prefix support to gnmi_set
    
  - Finish updates_only for poll and once
    
  - Move line inside block
    
  - Implement updates_only for stream subscriptions
    
  - Add authentication to gNOI. Return gRPC erros from PAMAuthenAndAuthor for better error codes
    
  - verify username/password is actually sent
    
  - Remove file added by accident
    
  - Add cmd line arg to enable user/passwd auth
    
  - Initial username/password auth support
    
  - Merge pull request #36 from project-arlo/gNOI
    
    Initial gNOI Support
  - Merge pull request #37 from project-arlo/jsonSchemaTests
    
    Json schema tests
  - remove debug code
    
  - Fix bug with muliple operations reusing path var
    
  - Add target option to gNOI client
    
  - Get schema for tests from compiled output
    
  - Add flag module to gNOI client to support morre rpcs in the future
    
  - Remove commented out code
    
  - Initial checkin for gNOI, with example System Time rpc
    
  - Merge pull request #34 from project-arlo/jsonSchemaTests
    
    Json schema tests
  - Merge pull request #35 from project-arlo/brcm_poc
    
    Brcm poc
  - Merge remote-tracking branch 'broadcom/broadcom_sonic' into brcm_poc
    
  - Add cleanup to test cases
    
  - Migrate interface ipv4 test to new format
    
  - Fix Makefile schema path, ad models, change test format
    
  - Fix formatting of json in README
    
  - Merge pull request #33 from project-arlo/master
    
    Syncing project-arlo/sonic-telmetry master to brcm_poc
  - typo
    
  - Add readme for json schema tests
    
  - More changes for Json Schema based tests
    
  - Use json schema for get tests as well. Use get test in set to verify results
    
  - Go back to local gNMI server
    
  - Initial validation support using json schema
    
  - Load tests from files and get info from file name
    
  - Merge pull request #30 from project-arlo/fix-check-testcase
    
    Fix check testcase to check individual attributes in a platform-independent way.
  - Merge pull request #31 from project-arlo/gnmi_cli_fixes
    
    Add check that heartbeat_interval is only valid on streaming query type
  - Merge remote-tracking branch 'project-arlo-telemetry/brcm_poc' into broadcom_sonic
    
    Change-Id: Ia772a55a893c2bee3c9e974700e4821f2f8d7af6
    
  - Add check that heartbeat_interval is only valid on streaming query type
    
  - Merge branch 'master' of https://github.com/project-arlo/sonic-telemetry into fix-check-testcase
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Merge pull request #29 from project-arlo/master
    
    Dell fixes on telemetry repo - 13th Sep
  - Merge pull request #28 from project-arlo/tests
    
    Disable platform specific test for now
  - Disable platform specific test for now
    
  - Merge pull request #27 from project-arlo/update_tls_config
    
    Remove duplicate ciphers
  - Remove duplicate ciphers
    
  - fix the check if value set testcase
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Merge pull request #26 from project-arlo/update_tls_config
    
    Update tls config
  - Update cipher suite list again
    
  - Fix spaces to tabs
    
  - Set Min TLS Version and cipher suites
    
  - Merge remote-tracking branch 'project-arlo-telemetry/brcm_poc' into broadcom_sonic
    
    Change-Id: Iae02e417fe8c8ea378a0e85d2354cda10f833b1b
    
  - Merge pull request #25 from project-arlo/master
    
    merge gnmi_cli code into telemetry repo
  - Merge pull request #23 from project-arlo/gnmi_cli_fixes
    
    Gnmi cli fixes
  - Merge pull request #24 from project-arlo/brcm_poc
    
    Fix low code coverage issue by enabling the gnmi_server test code listening on port 8081
  - Fix streaming_type in tests
    
  - Merge remote-tracking branch 'project-arlo-telemetry/brcm_poc' into broadcom_sonic
    
    Change-Id: I14fb29ab4016f390fab9c930a0af69f9a20eba85
    
  - Merge remote-tracking branch 'sshorigin/master' into gnmi_cli_fixes
    
  - Add full code for gnmi_cli with our changes so it can be built from scratch like gnmi_set/get. Update Makefile. Add fixes to gnmi_cli to use seconds as units everywhere instead of nanoseconds, and accept string for -streaming_type
    
  - Merge pull request #22 from project-arlo/brcm_poc
    
    BRCM changes for Telemetry UT
  - Merge remote-tracking branch 'project-arlo-telemetry/brcm_poc' into broadcom_sonic
    
    Change-Id: I4a0804425a4e0a396870004d717f192354dd19c8
    
  - Merge remote-tracking branch 'project-arlo-telemetry/brcm_poc' into broadcom_sonic
    
    Change-Id: Id9f1bef203c4a017d53ce0a854072732656e69ee
    
  - Merge remote-tracking branch 'project-arlo-telemetry/brcm_poc' into broadcom_sonic
    
    Change-Id: Id9f1bef203c4a017d53ce0a854072732656e69ee
    
  - Merge pull request #21 from project-arlo/master
    
    bring brcm_poc in par with master
  - Merge pull request #20 from project-arlo/gnmi-test-after-set
    
    Add code to check values set
  - Add code to check values set
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Merge pull request #19 from project-arlo/gnmi-add-delete-test
    
    Minor fix in Delete OC Interface IP testcase
  - Minor fix in Delete OC Interface IP testcase
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Merge pull request #18 from project-arlo/gnmi-add-delete-test
    
    Add delete test case
  - Add delete testcase
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Merge pull request #17 from project-arlo/gnmi_test_sys_pfm
    
    Gnmi Server test for system platform and interfaces
  - Add json file for ip config
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  -  Working gnmi server test for sys,pfm,interfaces
    
  - Add test to set ip address
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Code cleanup in server_test.go
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - Fix paths
    
  - fix
    
  - Fix some issues with test infra
    
  - Changes for testing get/set operations on OC interfaces
    
    Signed-off-by: Tejaswi Goel <Tejaswi_Goel@Dell.com>
    
  - working gnmi sys and pfm test without clearing bad logs
    
  - Merge pull request #16 from project-arlo/tests
    
    Disable old tests that fail due to new fields being added. Add basic …
  - Disable old tests that fail due to new fields being added. Add basic interface get test and capabilities test. Change package name and add symlink to cvl schema
    
  - Merge pull request #15 from project-arlo/tests
    
    Add test directory
  - Add test directory
    
  - Merge pull request #14 from project-arlo/translib-stream-subscribe
    
    Implement updates_only for ON_CHANGE streaming mode
  - Implement updates_only for ON_CHANGE streaming mode
    
  - Merge pull request #13 from project-arlo/translib-stream-subscribe
    
    Check error response before adding to on_change list
  - Check error response before adding to on_change list
    
  - Merge pull request #12 from project-arlo/capabilities-models
    
    Return models based on translib GetModels API
  - Return models based on translib GetModels API
    
  - Merge pull request #11 from project-arlo/translib-stream-subscribe
    
    Translib stream subscribe
  - Fix bug with sync messages
    
  - Implement suppress_redundant, fix ticker_map format, remove some debug prints, fix heartbeats
    
  - Close channel on error, check if timer if HB
    
  - Update IsSupported to IsOnChangeSupported, add heartbeat_interval support to gnmi_cli, remove debug code
    
  - Fix issue with when sync message is sent. Add heartbeat support. Add valueCache for suppress_redundant (wip)
    
  - convert subscribeResponse to gnmi subscribeResponse and return
    
  - wip
    
  - Merge pull request #10 from project-arlo/fix-if-replace-update
    
    Fix issue with updates and replace with interfaces
  - Fix issue with updates and replace with interfaces
    
  - Merge pull request #9 from project-arlo/sample-subscribe
    
    Sample subscribe
  - Fixes, also include binary for gnmi_cli for now
    
  - Add some dummy code for future subscribe api
    
  - cleanup
    
  - Use ticker_info struct
    
  - cleanup
    
  - Add paths to existing timer group if interval is the same
    
  - Initial support for sample based streaming subscribe
    
  - Merge pull request #8 from project-arlo/subscribe-support
    
    Ad once channel cleanup
  - Ad once channel cleanup
    
  - Merge pull request #7 from project-arlo/subscribe-support
    
    Subscribe support
  - Add gnmi_cli for subscribe client, update Makefile to build it, add .gitignore
    
  - Implement ONCE subscribe mode for translib
    
  - Port polling subscriptions code for translib
    
  - Merge pull request #6 from project-arlo/buildimage-refactor
    
    Fix build issue
  - Fix build issue
    
  - Merge pull request #5 from project-arlo/buildimage-refactor
    
    trigger building ocbinds file in translib, add gnmi_clients
  - trigger building ocbinds file in translib, forgot to add gnmi_clients in last commit
    
  - Merge pull request #4 from project-arlo/buildimage-refactor
    
    Add gnmi set and get client to build
  - Add gnmi set and get client to build
    
  - Merge pull request #3 from project-arlo/buildimage-refactor
    
    Add back install and other targets to fix deb package
  - Add back install and other targets to fix deb package
    
  - Merge pull request #2 from project-arlo/buildimage-refactor
    
    Buildimage refactor
  - Install CVL deps and update gopath
    
  - More Makefile changes
    
  - Move source files into src, change import paths, fixing Makefile
    
  - Merge pull request #1 from project-arlo/brcm_poc
    
    Merge PoC changes to master
  - Ignore test results for gnmi_server
    
    The Debian files attempt to run make check for the gNMI server, however,
    it fails on a build machine, because it expects the Redis server to be
    available and listening on localhost port 6379.
    
    For now, the result of the test is ignored, and we have to find a way to
    fix this so that the tests work even on a build machine.
    
  - GNMI PoC changes