NetStandard Tests v1

[MiYanni]

Description

v1 set of Az tests from this issue: #6931

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate change log has been updated
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • the changes have gone through a cmdlet design review
  • the cmdlet markdown files were generated using the platyPS module

[cormacpayne]

@MiYanni looks like there's a path issue with one of the ServiceFabric tests -- would you mind taking a look?

[cormacpayne]

@MiYanni changes look good to me, but I'd like @markcowl to take a look as well

[markcowl]

LGTM other than the comment on skips