[ContainerApp] Fix: az containerapp create --yaml always shows warning.

[abij]

Small fix for the warning: Additional flags were passed along with --yaml. These flags will be ignored, and the configuration defined in the yaml will be used instead.

The documentation states that the default value for revisions_mode (ActiveRevisionsMode) is "Single": containerapps-2023-08-01-preview

When this is initialised to None, like most values, the warning does not appear.

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General Guidelines

• [x] Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• [x] Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• [x] My extension version conforms to the Extension version schema

[azure-client-tools-bot-prd[bot]]

⚠️Azure CLI Extensions Breaking Change Test

⚠️containerapp

rule	cmd_name	rule_message	suggest_message
⚠️ 1009 - ParaPropRemove	containerapp create	cmd containerapp create update parameter revisions_mode: removed property default=single

[azure-client-tools-bot-prd[bot]]

Hi @abij, Please write the description of changes which can be perceived by customers into HISTORY.rst. If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

ContainerApp

[microsoft-github-policy-service[bot]]

Thank you for your contribution abij! We will review the pull request and get back to you soon.

[abij]

related issue: #7276