Making AddHDInsightConfigValues composable to avoid dropping values on multiple invocations.
Sql Defect 1912396 : Import PS Cmdlet does not respect db size/edition

Root cause:
PS cmdlet Start-AzureSqlDatabaseImport did not pass the Database MaxSize and Edition parameter to the Import Service.

Fix:
Updated hydra generated SqlManagementClient.cs to support Database Edition.
Add Database MaxSize and Edition parameter when calling Import Service.
Merge branch 'master' of https://github.com/WindowsAzure/azure-sdk-tools

Conflicts:
	WindowsAzurePowershell/src/ManagementLibraries/Sql/SqlManagementClient.cs
Remove the conflict token in the SqlManagementClient.cs file
Merge branch 'master' of https://github.com/ximchen/azure-sdk-tools into winazure_dev

Conflicts:
	WindowsAzurePowershell/src/ManagementLibraries/Sql/SqlManagementClient.cs
Update Commands.SqlDatabase.csproj reference:
    Microsoft.WindowsAzure.Management.Sql
    from 0.9.2-preview to 0.9.5-preview
Updating packages.config of referencing Microsoft.WindowsAzure.Management.Sql from 0.9.2-preview to 0.9.5-preview
Merge pull request #2278 from ximchen/master

Sql Defect 1912396 : Import PS Cmdlet does not respect db size/edition
Merge pull request #2253 from Phanatic/Fix_AddAureHDInsightConfigValues

Fix AddAzureHDInsightConfigValues to avoid dropping values