Azure-cli: Remove doc for command `az network application-gateway frontend-ip update` because it is not works.

[fiftin]

Command:

az network application-gateway frontend-ip update

not working for public ip address. Issue https://github.com/Azure/azure-cli/issues/4133 created in Aug 2017, but M$ never fixed it.

Please remove from docs if it is not works!

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Document Details

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• ID: 22983291-ef1b-2d38-a378-a87533f9167f
• Version Independent ID: ed056af3-1e62-b953-39ea-6e968f47ce14
• Content: az network application-gateway frontend-ip
• Content Source: src/azure-cli/azure/cli/command_modules/network/_help.py
• Service: virtual-network
• GitHub Login: @rloutlaw
• Microsoft Alias: routlaw

[yonzhan]

add to S172

[subhasishdc]

@MyronFanQiu @tjprescott : Seeing this same issue too. Issue https://github.com/Azure/azure-cli/issues/4133 was created previously for this. It was closed without removing it from the az network application-gateway frontend-ip update --help section or the documentation since the service may change in future to permit this behavior.

Is there any update on the future roadmap of the service to support this? If not, it would be best to remove it from the --help section as well as from the documentation to avoid confusion.

[subhasishdc]

PR (https://github.com/Azure/azure-cli/pull/14098) has been merged to deprecate the --public-ip-address parameter.

[MyronFanQiu]

Thanks for @subhasishdc's contribution. Closed this issue since it's solved.