persist Azure Az Powershell module between container executions.

[nickelTyle]

Proposed changes

Persist cache for Azure Az powershell module in between runs

Issues for these changes

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (changes to code, which do not change application behavior)

Checklist

• I have filled out this PR template
• I have read the CONTRIBUTING doc
• I have added automated tests that prove my fix is effective or that my feature works
• I have added necessary documentation (README.md, CHANGELOG.md, etc. - if appropriate)

Dependencies and Blockers

Relevant Links

Further comments

Copied from #57. i had to reauthor commits under a different email in order to accept CLA