infrastructure for PS tests
adding in solution changes
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into scenarioTests
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into scenarioTests
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into scenarioTests
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into scenarioTests
Additional changes
credential cleanup
cr comments
cr comments 2
Merge pull request #877 from markcowl/scenarioTests

Common infrastructure for scenario tests