Limit deploy health checks to paunch managed ones

If an operator has non-paunch managed containers (ceph/openshift), we
may not want to fail the deployment if those are unhealthy.

Change-Id: Ifd3e67a66b3224d0ed5f7ef12ba27b06f78c8556

common/deploy-steps-tasks.yaml

@@ -227,7 +227,7 @@
     - name: "Check for unhealthy containers after step {{step}}"
       shell: |
         counter=0
-        while [ $(docker ps -f health=starting -q | wc -l) -gt 0 ] && [ $count -lt 10 ]; do
+        while [ $(docker ps -f health=starting -f label="managed_by=paunch" -q | wc -l) -gt 0 ] && [ $count -lt 10 ]; do
            sleep 6
            count=$[count+1]
         done