Update - Microsoft.Management missing from Subscription during Initialize

[Sebastian Claesson (SebastianClaesson)]

Overview/Summary

• Added Microsoft.Management Resource Provider to the prerequisites list.
• Added to FAQ if Azure Mangement groups are not populated correctly.
• Added new log message 'Initialize-AzOpsEnvironment.ManagementGroup.InsufficientPermissions'
• Added logic to match if the error is due to insufficient permissions to register the Microsoft.Management resource provider.

I'm a bit unsure of how you like to have the catch logic & message(s), as it's maybe not such a clean fix and can be improved.
Please come with any feedback of suggestions and I'll happily implement them!

This PR fixes/adds/changes/removes

1. RP Microsoft.Management missing from Subscription during Initialize #863

Testing Evidence

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant issues, for tracking and closure.
• Ensured my code/branch is up-to-date with the latest changes in the mainbranch
• Performed testing and provided evidence.
• Updated relevant and associated documentation.

[Jesper Fajers (Jefajers)]

Sebastian Claesson (@SebastianClaesson), thanks for this contribution. I have made slight wording changes and a tradeoff in regards to the error message output by combining the current "simple" message and "logic" but always appending the full error message.

What do you think?

[Sebastian Claesson (SebastianClaesson)]

Thanks! Looks really good!
I've changed from "Registered" to "Register" in prerequisties.

[Jesper Fajers (Jefajers)]

Looks good :)