Adding test cases for Get/Set/Remove-AzureVMBGInfoExtension cmdlets
Restore the vmaccess & generic extension cmdlets
Merge branch 'dev' of https://github.com/huangpf/azure-sdk-tools into template
Removing duplicate file AzureVMBGExtesnionTests.cs
Removing unused methods
Merge branch 'release-0.7.3' of https://github.com/WindowsAzure/azure-sdk-tools into template
Merge branch 'release-0.7.3' of https://github.com/WindowsAzure/azure-sdk-tools into template
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into dev
Merge pull request #2324 from WindowsAzure/release-0.7.3

Merge release into dev
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into dev
Prototype: Support EmulatorExpress
Fill in Cmdlet help document for new added Mode parameter
code cleaning up and unit test
add scenario test for emulator express
Small change to make class method scope consistent
Update test name
Merge pull request #2327 from guangyang/release-0.7.3

Release 0.7.3
Merge branch 'release-0.7.3' of github.com:WindowsAzure/azure-sdk-tools into dev
Merge pull request #2329 from guangyang/dev

from master to dev
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-tools into template