Fix test failures on Windows for time zone and remoting

[adityapatwardhan]

PR Summary

• Fix test on Windows client where -SkipNetworkProfile check is needed.
• Make Test-IsWinServer2012R2 a common help function and skip time zone tests correctly.

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[ghost]

This pull request has been automatically marked as Review Needed because it has been there has not been any activity for 7 days.
Maintainer, please provide feedback and/or mark it as Waiting on Author

[adityapatwardhan]

@anmenaga - can you please review?

[ghost]

🎉v7.4.0-preview.4 has been released which incorporates this pull request.:tada:

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