Promethues-relay job should trigger docker-build

docker-build-images-prometheus job

Change-Id: I9c3aee70d2770bb118aba071b423879dce1e10f7
diff --git a/build-debian-packages-prometheus-relay.groovy b/build-debian-packages-prometheus-relay.groovy
index a8b7706..043298d 100644
--- a/build-debian-packages-prometheus-relay.groovy
+++ b/build-debian-packages-prometheus-relay.groovy
@@ -82,6 +82,9 @@
                         aptly.publish(APTLY_URL)
                     }
 
+                    stage("rebuild docker images")
+                        build job: "docker-build-images-prometheus", parameters: []
+                    }
                 }
             }