Fix contrail manifest file (shell)

Change-Id: I4eba140775391c5996b4658f6d7920652d2c6085
diff --git a/kubernetes/files/kube-addons/contrail/contrail.yaml b/kubernetes/files/kube-addons/contrail/contrail.yaml
index 3387827..5d5ca58 100644
--- a/kubernetes/files/kube-addons/contrail/contrail.yaml
+++ b/kubernetes/files/kube-addons/contrail/contrail.yaml
@@ -54,7 +54,7 @@
           postStart:
             exec:
               command:
-              - /bin/shm
+              - /bin/sh
               - -c
               - >
                 service rabbitmq-server stop;