Change the variables

Change the variables to MONGODB_APT_KEY and MONGODB_REPO

playbooks/roles/mongo/tasks/main.yml

@@ -8,12 +8,12 @@
 - name: add the mongodb signing key
   apt_key: >
     id=7F0CEB10
-    url={{mongodb_apt_key}}
+    url={{MONGODB_APT_KEY}}
     state=present
 
 - name: add the mongodb repo to the sources list
   apt_repository: >
-    repo='{{ mongodb_repo }}'
+    repo='{{ MONGODB_REPO }}'
     state=present
 
 - name: install mongo server and recommends