fix: init Azure clients consistently

[mboersma]

Reason for Change:
While adding new Azure client support to our AzureClient, I noticed that not all client objects are being initialized the same way. This appears to be an oversight, so I fixed it.

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[codecov]

Codecov Report

Merging #2739 into master will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2739      +/-   ##
==========================================
- Coverage   72.33%   72.33%   -0.01%     
==========================================
  Files         137      137              
  Lines       25317    25332      +15     
==========================================
+ Hits        18314    18324      +10     
- Misses       5947     5952       +5     
  Partials     1056     1056              

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[jackfrancis]

What exactly change? (diff is a bit obtuse here)

[mboersma]

Sorry, the diff is hard to parse. I alpha-sorted each section so I could do a visual comparison and see which were missing. (I would have made this a better refactor but there aren't any existing interfaces to use here and it looks awkward to create one.)

In summary:

• c.availabilitySetsClient and c.virtualMachineExtensionsClient weren't getting authorizer set as other clients did
• c.msiClient, c.ServicePrincipalsClient, c.VirtualMachineExtensionsClient, c.VirtualMachineImagesClient, and c.workspacesClient weren't getting PollingDuration set as other clients did
• Several clients weren't getting RequestInspector set in AddAcceptLanguages
• Several clients weren't getting RequestInspector set in AddAuxiliaryTokens

With the exception of those clients using graphAuthorizer, it looks like all these init patterns should be identical for the set of clients, and this PR makes that so.

[jackfrancis]

/lgtm

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This pull-request has been approved by: jackfrancis, mboersma

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