[9 tests] Automate P0 Tenancy testcases

[shuklanirdesh82]

• 1. Verify _DEFAULT tenant exist with default privileges and verify volume creation
  steps: Please refer Issue [test automation - 2 tests] _DEFAULT tenant & default access rules #895

• 2. Verify volume creation by updating access privileges for _DEFAULT tenant
  steps: Please refer Issue [test automation - 2 tests] _DEFAULT tenant & default access rules #895

• 3. Verify volume creation after deleting _DEFAULT tenant
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

• 4. Verify volume creation from new tenant
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

• 5. Verify volume creation after deleting user created tenant
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

• 6. Update datastore access for volume creation (--allow-create) for the Tenant T1 and create volume from VM1
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

• 7. Update datastore access for --volume-totalsize from 1 GB to 2GB by keeping allow_create to true and Max_volume_size to satisfiable
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

• 8. Update datastore access for --volume-maxsize from 500MB to 600MB by keeping all other rights satisfiable
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

• 9. Update access rights gradually from non-satisfiable to satisfiable for {volume-maxsize, allow-create, volume-totalsize}
  steps: Please refer Issue [test automation] Tenant ls/remove/rename admin CLI tests #899

[govint]

Tests 4 overlaps with 1 and 5 isn't allowed anymore. Vmgroup can't be deleted with a VM in it. Test 6 in #899 led to fixes that prevent deleting the vmgroup with a VM in it. Test 3 is also disallowed now.

[govint]

Closed #1286