Revert "Temponarily disable running model tests on hardware nodes"

This reverts commit b229f45ed917e639b4d3d4e7aa15be6f24e32601.

Change-Id: I8eaed6f0606aaaf8c918348042d0a237d67751e1
diff --git a/test-salt-model-node.groovy b/test-salt-model-node.groovy
index b7c616b..cc5c7be 100644
--- a/test-salt-model-node.groovy
+++ b/test-salt-model-node.groovy
@@ -29,7 +29,7 @@
 def checkouted = false
 
 throttle(['test-model']) {
-  node("python&&virtual") {
+  node("python") {
     try{
       stage("checkout") {
         if(defaultGitRef != "" && defaultGitUrl != "") {