Fix for New-AzureRmRoleAssignment and Remove-AzureRmRoleAssignment fo…

[bganapa]

Description

Fix for New-AzureRmRoleAssignment and Remove-AzureRmRoleAssignment for ADFS scenario

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

[bganapa]

Updated this PR with commits from #7221 which got in to preview already

[bganapa]

@maddieclayton Could you please help why these IOTHub tests are failing... I have already retried..

If they are fixed in preview branch.. can we override and merge this PR?

System.Management.Automation.ParameterBindingException : A parameter cannot be found that matches parameter name '-TextExtension'.

[bganapa]

@cormacpayne /@markcowl as well if they know about these IOT hub test failures.. I have already retired. Thanks for looking in to this!

[deathly809]

@bganapa All the admin tests seem to be failing.

Import-Module : The required module 'AzureRM.Profile' is not loaded. Load the 

[bganapa]

@deathly809 good catch.. it was my commit that removed a needed psd1 file in the cleanup script, my yesterday night validation run failed as well. Fixed it with the above commit

[bganapa]

@deathly809 Asides we should enable failing of the job when the pester tests are failing..

[bganapa]

@maddieclayton @deathly809 The admin tests are passing now