remove hardcoded parameter for artifactory docker image

remove hardcoded patch for the artifactory docker image
image: ${_param:docker_image_repository:cicd}

Change-Id: I675bb777f6f08500d275005699ced50cab316c1d
diff --git a/docker/swarm/stack/artifactory.yml b/docker/swarm/stack/artifactory.yml
index cda48fe..411b22e 100644
--- a/docker/swarm/stack/artifactory.yml
+++ b/docker/swarm/stack/artifactory.yml
@@ -13,7 +13,7 @@
               deploy:
                 restart_policy:
                   condition: any
-              image: ${_param:docker_image_repository:cicd}/artifactory
+              image: ${_param:docker_image_repository:cicd}
               ports:
                 - 18082:8081
               volumes: