[connectedvmware] Bump up api version, add vm retain support

[nascarsayan]

Bumping up the API version from 2020-10-01-preview to 2022-01-10-preview, as we need access to the retain query parameter for VM delete in the az subcommand.

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[yonzhan]

connectedvmware

[zhoxing-ms]

Could you add new tests for this new parameter?

[zhoxing-ms]

Do you want to release a new extension version for this PR change? If so, please add the description of the new parameter into the HISTORY.rst and upgrade the version defined in the setup.py

[nascarsayan]

Could you add new tests for this new parameter?

@zhoxing-ms , Have added tests for the new parameter. Also, have increased the extension build number.

[azclibot]

[Release] Update index.json for extension [ connectedvmware ] : https://dev.azure.com/azclitools/internal/_build/results?buildId=16816&view=results