[submodule] Advance sonic-utilities

[lolyu]

Signed-off-by: Longxiang Lyu lolv@microsoft.com

Why I did it

To include sonic_installer swap setup changes

171eb4f [sonic_installer] Add swap setup support (#1787)
6483b0b QOS fieldvalue refernce ABNF format to string (#1626)
8d16eb5 [Fast-reboot] Set flex counters delay indicator to prevent flex counters enablement after fast-reboot (#1768)
1bc24ca [portstat pfcstat] Unify the packet number format in the output of portstat and pfcstat in all cases (#1755)
d7900dd [config][generic-update] Implementing patch sorting (2nd attempt) (#1794)
7ed9a91 [show] Allow system with no ports in config db run without errors (#1754)

How I did it

Advance sonic-utilities submodule

How to verify it

build image and verify the swap could be setup successfully on devices with limited memory resources

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106

Description for the changelog

A picture of a cute animal (not mandatory but encouraged)

[yozhao101]

/azp run

[azure-pipelines]

Pull request contains merge conflicts.

[yozhao101]

/azp run

[azure-pipelines]

Pull request contains merge conflicts.

[yozhao101]

PR has some conflict change and please resolve.