Add Premium SKU to PS

[ahosnyms]

This PR is urgent for March release.

[azurecla]

Hi @ahosnyms, I'm your friendly neighborhood Azure Pull Request Bot (You can call me AZPRBOT). Thanks for your contribution!

It looks like you're working at Microsoft (ahosny). If you're full-time, we DON'T require a contribution license agreement.

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[azuresdkci]

Can one of the admins verify this patch?

[shefaliv]

approved.

[hovsepm]

@azuresdkci test this please

[markcowl]

@azuresdkci retest this please

[markcowl]

on demand run here:http://azuresdkci.cloudapp.net/view/1-AzurePowerShell/job/powershell-demand/613/