{AKS} AKS snapshot related commands

[chengliangli0918]

• Add support for new snapshot commands
  • az aks snapshot create
  • az aks snapshot delete
  • az aks snapshot list
  • az aks snapshot show
• Add --snapshot-id to creating/upgrading commands
  • az aks create --snapshot-id
  • az aks nodepool add --snapshot-id
  • az aks nodepool upgrade --snapshot-id

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]

aks

[FumingZhang]

Due to some problems with the PR trigger, I manually queued a live test pipeline and the result shows everything works fine.