Adding vmss networking tests

[EvgenyAgafonchikov]

Description

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This checklist is used to make sure that common guidelines for a pull request are followed. You can find a more complete discussion of PowerShell cmdlet best practices here.

• I have read the contribution guidelines.
• If changes were made to any cmdlet, the XML help was regenerated using the platyPSHelp module.
• If any large changes are made to a service, they are reflected in the respective change log.

General Guidelines

• Title of the pull request is clear and informative.
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• The pull request does not introduce breaking changes (unless a major version change occurs in the assembly and module).

Testing Guidelines

• Pull request includes test coverage for the included changes.
• PowerShell scripts used in tests should do any necessary setup as part of the test or suite setup, and should not use hard-coded values for locations or existing resources.

Cmdlet Signature Guidelines

• New cmdlets that make changes or have side effects should implement ShouldProcess and have SupportShouldProcess=true specified in the cmdlet attribute. You can find more information on ShouldProcess here.
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Cmdlet Parameter Guidelines

• Parameter types should not expose types from the management library - complex parameter types should be defined in the module.
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[msftclas]

@EvgenyAgafonchikov,
Thanks for your contribution as a Microsoft full-time employee or intern. You do not need to sign a CLA.
Thanks,
Microsoft Pull Request Bot

[markcowl]

Please do not hardcode the location. This prevents this test from being used with subscriptiosn that do not have access there, or in environments that do not have this location. Instead, query ARM for the available locations for the providers thaty are needed for this test. You can prefer a location if it appears in the list.

[EvgenyAgafonchikov]

done

[hyonholee]

LGTM

[markcowl]

on demand run here: http://azuresdkci.cloudapp.net/view/1-AzurePowerShell/job/powershell-demand/1755/