Wait for tiller readiness when installing

control/control

@@ -22,6 +22,8 @@ installTiller()
 {
     kubectl apply -f "/control/k8s-config/tiller-permissions.yml"
     helm init --service-account=tiller
+    # Wait for tiller to become available.
+    kubectl rollout status -n kube-system deployment/tiller-deploy
 }
 
 createStorage()