Improve Service Bus scenario tests robustness
Add more test categories
Add more test categories
Merge branch '904' of https://github.com/ogail/azure-sdk-tools into 904

Conflicts:
	build.proj
Add Remove-AzureSBNamespace WhatIf scenario tests
Add Remove-AzureService scenario tests
Add Remove-AzureSubscription scenario tests
Add Remove-AzureWebsite scenario tests
Update the scenario test filter to run all tests
Exit if the wait does not succeed
Merge pull request #918 from ogail/904

Improve Service Bus scenario tests robustness