Merge pull request #2239 from edx/derf/DEVOPS-2621_-_add_CREDIT_HELP_LINK_URL_environment_variable

DEVOPS-2621 - add CREDIT_HELP_LINK_URL environment variable

playbooks/roles/edxapp/defaults/main.yml

@@ -110,6 +110,8 @@ EDXAPP_CELERY_BROKER_VHOST: ""
 EDXAPP_VIDEO_CDN_URLS:
   EXAMPLE_COUNTRY_CODE: "http://example.com/edx/video?s3_url="
 
+EDXAPP_CREDIT_HELP_LINK_URL: ""
+
 EDXAPP_PLATFORM_NAME: 'Your Platform Name Here'
 EDXAPP_STUDIO_NAME: 'Studio'
 EDXAPP_STUDIO_SHORT_NAME: 'Studio'
@@ -889,6 +891,7 @@ lms_env_config:
   LTI_USER_EMAIL_DOMAIN: "{{ EDXAPP_LTI_USER_EMAIL_DOMAIN }}"
   PROCTORING_SETTINGS: "{{ EDXAPP_PROCTORING_SETTINGS }}"
   DISPLAY_ANALYTICS_ENROLLMENTS: "{{ EDXAPP_DISPLAY_ANALYTICS_ENROLLMENTS }}"
+  CREDIT_HELP_LINK_URL: "{{ EDXAPP_CREDIT_HELP_LINK_URL }}"
 
 cms_auth_config:
   <<: *edxapp_generic_auth