SqlServiceAccount: Returning MSFT_Credential instead of the ServiceAccountName

[johlju]

Details of the scenario you tried and the problem that is occurring:
The resource SqlServiceAccount should return the service account name as a string, but since the string is returned in the property ServiceAccount which is of type MSFT_Credential we get a credential object back.

[-] Should have set the resource and all the parameters should match 630ms
Expected: {APPVYR-WIN\svc-SqlSecondary}
But was:  {MSFT_Credential}
108:                 $resourceCurrentState.ServiceAccount | Should -Be ('{0}\{1}' -f $env:COMPUTERNAME, (Split-Path -Path $mockSqlServiceSecondaryAccountUserName -Leaf))

I suggest we add a read only property ServiceAccountName which returns the service account name as a string.

The DSC configuration that is using the resource (as detailed as possible):

SqlServiceAccount Integration_Test
{
    ServerName     = $Node.ServerName
    InstanceName   = 'MSSQLSERVER'
    ServiceType    = 'DatabaseEngine'
    ServiceAccount = $SqlServiceSecondaryCredential
    RestartService = $true
}

Version of the Operating System, SQL Server and PowerShell the DSC Target Node is running:
n/a

What module (SqlServer or SQLPS) and which version of the module the DSC Target Node is running:
n/a

Version of the DSC module you're using, or 'dev' if you're using current dev branch:
Dev