Dev/sanmishra/added vm extension support to connectedvmware az cli extension

[iamsantoshmishra-zz]

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This checklist is used to make sure that common guidelines for a pull request are followed.

General Guidelines

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

For new extensions:

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

About Extension Publish

There is a pipeline to automatically build, upload and publish extension wheels.
Once your PR is merged into master branch, a new PR will be created to update src/index.json automatically.
The precondition is to put your code inside this repo and upgrade the version in the PR but do not modify src/index.json.

[yonzhan]

connectedvmware

[zhoxing-ms]

Could you add some tests for those changes?

[zhoxing-ms]

Since we can't know the valid values of expand for the time being, and there are other commands in the extension also use --expand, we can keep this design temporarily.

However, I still recommend finding out the valid values of expand, and using these valid values as parameter names to facilitate user's input. Otherwise, users can't know what the values should be passed in for the expand expression, this parameter will not easy for them to use.

As communicated with @93mishra offline, this improvement will be considered and added to the subsequent PR later. So I approve this PR first