adding restart policy to docker compose

Change-Id: I44655f864e571e61e91f923c7f907c5a23c3b860
diff --git a/roles/mavenrepo/templates/mavenrepo.yml.j2 b/roles/mavenrepo/templates/mavenrepo.yml.j2
index 8195635..d2ab5ed 100644
--- a/roles/mavenrepo/templates/mavenrepo.yml.j2
+++ b/roles/mavenrepo/templates/mavenrepo.yml.j2
@@ -3,3 +3,4 @@
     container_name: mavenrepo
     ports:
       - "8080:80"
+    restart: unless-stopped