Merge pull request #4241 from edx/waheed/LEARNER-2731-add-branch-key

Add BRANCH_KEY to configure branch.io banners.

CHANGELOG.md

+- Role: edxapp
+  - Added `EDXAPP_BRANCH_IO_KEY` to configure branch.io journey app banners.
+
 - Role: ecomworker
   - Added `ECOMMERCE_WORKER_BROKER_TRANSPORT` with a default value of 'ampq' to be backwards compatible with rabbit.  Set to 'redis' if you wish to use redis instead of rabbit as a queue for ecommerce worker.
 

playbooks/roles/edxapp/defaults/main.yml

@@ -157,6 +157,7 @@ EDXAPP_CELERY_BROKER_TRANSPORT: 'amqp'
 EDXAPP_CELERY_BROKER_VHOST: ""
 EDXAPP_CELERY_BROKER_USE_SSL: false
 EDXAPP_CELERY_EVENT_QUEUE_TTL: "None"
+EDXAPP_BRANCH_IO_KEY: ""
 
 EDXAPP_VIDEO_CDN_URLS:
   EXAMPLE_COUNTRY_CODE: "http://example.com/edx/video?s3_url="
@@ -967,6 +968,7 @@ edxapp_generic_auth_config:  &edxapp_generic_auth
   FACEBOOK_APP_SECRET: "{{ EDXAPP_FACEBOOK_APP_SECRET }}"
   FACEBOOK_API_VERSION: "{{ EDXAPP_FACEBOOK_API_VERSION }}"
   ENTERPRISE_SERVICE_WORKER_USERNAME: "{{ EDXAPP_ENTERPRISE_SERVICE_WORKER_USERNAME }}"
+  BRANCH_IO_KEY: "{{ EDXAPP_BRANCH_IO_KEY }}"
 
 generic_cache_config: &default_generic_cache
   BACKEND:  'django.core.cache.backends.memcached.MemcachedCache'