[containerapp] Add support for --artifact, bug fixes and tests

[daniv-msft]

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• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)

For new extensions:

• My extension description/summary conforms to the Extension Summary Guidelines.

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There is a pipeline to automatically build, upload and publish extension wheels.
Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
You only need to update the version information in file setup.py and historical information in file HISTORY.rst in your PR but do not modify src/index.json.

[azure-client-tools-bot-prd]

⚠️Azure CLI Extensions Breaking Change Test

⚠️containerapp

rule	cmd_name	rule_message	suggest_message
⚠️ 1006 - ParaAdd	containerapp create	cmd containerapp create added parameter artifact
⚠️ 1006 - ParaAdd	containerapp up	cmd containerapp up added parameter artifact
⚠️ 1006 - ParaAdd	containerapp update	cmd containerapp update added parameter artifact

[azure-client-tools-bot-prd]

Hi @daniv-msft,
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.

[azure-client-tools-bot-prd]

Hi @daniv-msft,
Since the current milestone time is less than 7 days, this pr will be reviewed in the next milestone.

[yonzhan]

containerapp

[Greedygre]

What if arcname is None? None == "" return false

[daniv-msft]

I don't believe it could happen today given the logic, but I'm updating the code to also take "None" into account

[yonzhan]

Please fix conflicting files.

[Greedygre]

Hi @daniv-msft
Please fix the CI.
Please add artifact in params for command containerapp up

• FAIL - HIGH severity: missing_parameter_help
  Parameter: containerapp up, artifact - Missing help

[Greedygre]

Hi @zhoxing-ms

Can you help to review this PR? Thanks.

[yonzhan]

Please fix CI issues.