Add a variable for the jenkins URL.

playbooks/roles/alton/defaults/main.yml

@@ -26,6 +26,9 @@ ALTON_REDIS_URL: 'redis://fakeuser:redispassword@localhost:6379'
 ALTON_HTTPSERVER_PORT: '8081'
 ALTON_WORLD_WEATHER_KEY: !!null
 
+# Needed if you want to build AMIs from alton.
+ALTON_JENKINS_URL: !!null
+
 alton_role_name: alton
 
 alton_user: alton
@@ -51,6 +54,7 @@ alton_environment:
   WILL_REDIS_URL: "{{ ALTON_REDIS_URL }}"
   WILL_HTTPSERVER_PORT: "{{ ALTON_HTTPSERVER_PORT }}"
   WORLD_WEATHER_ONLINE_KEY: "{{ ALTON_WORLD_WEATHER_KEY }}"
+  JENKINS_URL: "{{ ALTON_JENKINS_URL }}"
 
 #
 # OS packages