feat) add support for the S1 SKU

[SudhindraKovalam]

Description

Checklist

• [ x] 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 (Microsoft internal partners only) (Since the change is simple, I was told, no design review needed)
  • the cmdlet markdown files were generated using the platyPS module

[adxsdkps]

Can one of the admins verify this patch?

[cormacpayne]

@SudhindraKovalam I re-targeted this PR at the new default branch, master, so you'll need to pull from that branch rather than preview to resolve the above merge conflicts whenever you are able to get back to this PR.

Note: since the next release is the GA of the Az module, we have removed all reference docs to AzureRM cmdlets, so you will need to regenerate your help based on the Az cmdlets.

[markcowl]

@azuresdkci add to whitelist

[markcowl]

@azuresdkci test this please

Comment addressed