Output message in json

Would limit new console output to systems that do not already support EnhancedSessionTransportType. The vast majority of systems supports it and should not print additional messages.

plugins/providers/hyperv/scripts/set_enhanced_session_transport_type.ps1

@@ -22,7 +22,10 @@ try {
     if($present) {
         Hyper-V\Set-VM -VM $VM -EnhancedSessionTransportType $Type
     }else{
-        Write-OutputMessage "This version of HyperV does not support EnhancedSessionTransportType, ignoring."
+        $message = @{
+            "EnhancedSessionTransportTypeSupportPresent"=$false;
+            } | ConvertTo-Json
+        Write-OutputMessage $message
     }
 } catch {
     Write-ErrorMessage "Failed to assign EnhancedSessionTransportType to ${Type}:${PSItem}"