Code enhancements

Jenkinsfile

@@ -79,6 +79,7 @@ pipeline {
         script {
           for (String item : service_update.split()) {
             try{
+               echo "Updating ${item}"
                sh "echo Docker host is $DOCKER_HOST, cert $DOCKER_CERT_PATH"
                sh "docker service update ${service_name} --image ${DOCKER_REGISTRY}/iru/${DOCKER_IMAGE}:${NEWTAG}"
             }