Add pull_docker_registry

Change-Id: Ic255aa0b800012c52c478dcd5228a598b4ff3b9b
diff --git a/roles/mavenrepo-install/defaults/main.yml b/roles/mavenrepo-install/defaults/main.yml
index 8fc31ac..c25d84d 100644
--- a/roles/mavenrepo-install/defaults/main.yml
+++ b/roles/mavenrepo-install/defaults/main.yml
@@ -4,6 +4,6 @@
 head_mavenrepo_dir: /opt/mavenrepo
 
 # Docker related settings
-deploy_docker_registry: ""
-deploy_docker_tag: "candidate"
+pull_docker_registry: ""
+pull_docker_tag: "candidate"