* Added initiate-maintenance command. Also added the MaintenanceStatus to the response of Get-AzureVM command.

* add modified files in src/ServiceManagement/Network to update the version change of the new csharp sdk.

* Fixed some tests.

* removed other unnecessary references.

* remove unnecessary references.

* remove unnecessary lines.

* Removed <Private>True</Private> in the csproj files.

* Mark PersistentVM parameter in RestartVM.cs as obsoleteAttribute. Also reformatted some files.

* Update the ChangeLog in src/ServiceManagement.