add watch fo kubeconfig to kubelet

Is is necesary to watch /etc/kubernetest/kubelet.kubeconfig to properly
start kubelet.

Change-Id: Ibb6db0ed1f50aba9f76277127f594172c2644496
diff --git a/kubernetes/_common.sls b/kubernetes/_common.sls
index d6521bf..993c607 100644
--- a/kubernetes/_common.sls
+++ b/kubernetes/_common.sls
@@ -96,5 +96,6 @@
   - watch:
     - file: /etc/default/kubelet
     - file: /usr/bin/hyperkube
+    - file: /etc/kubernetes/kubelet.kubeconfig
 
 {% endif %}