Make the availability of the LMS Credit API configurable

playbooks/roles/edxapp/defaults/main.yml

@@ -124,6 +124,8 @@ EDXAPP_ENABLE_THIRD_PARTY_AUTH: false
 
 EDXAPP_ENABLE_EDXNOTES: false
 
+EDXAPP_ENABLE_CREDIT_API: false
+
 EDXAPP_MODULESTORE_MAPPINGS:
     'preview\.': 'draft-preferred'
 
@@ -186,6 +188,7 @@ EDXAPP_FEATURES:
   ENABLE_VIDEO_BEACON: false
   ENABLE_ONLOAD_BEACON: false
   ENABLE_EDXNOTES: "{{ EDXAPP_ENABLE_EDXNOTES }}"
+  ENABLE_CREDIT_API: "{{ EDXAPP_ENABLE_CREDIT_API }}"
 
 EDXAPP_BOOK_URL: ""
 # This needs to be set to localhost