Bug fixes for Azure Firewall

[iatodoro]

Description

Removing the ability to create management IP configuration outside of New/Allocate flows - attaching management IP config to an existing firewall is currently not supported. Updated docs accordingly.

Fixing bug where auto generated ipConfiguration names may conflict with existing ones

Fixing documentation bug for IpGroups

Checklist

• The title of the PR is clear and informative
• I have read the Submitting Changes section of CONTRIBUTING.md
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
  • the markdown help files have been regenerated using the commands listed here

[anton-evseev]

Looks good but please re-record updated test

[wyunchi-ms]

Hi @iatodoro. As SetManagementIpConfiguration is a public method, so it may be used by the users, removing it may cause a breaking change. I suggest merge this on next Ignite release.

[iatodoro]

Hi @iatodoro. As SetManagementIpConfiguration is a public method, so it may be used by the users, removing it may cause a breaking change. I suggest merge this on next Ignite release.

I think it's highly unlikely anyone is using this as it's part of a feature we haven't fully released yet. The backend implementation is specifically coded to prevent this scenario so this can be considered a bug fix. Currently if anyone does try to use this, they would get an API error and put their firewall in a bad state.

We are targetting 2/18 to release the feature, hence we need this fix in the S165 milestone.

[iatodoro]

@number213 Updated recordings - please approve.