Merge pull request #1342 from edx/jarv/var-updates

Jarv/var updates

playbooks/roles/edxapp/defaults/main.yml

@@ -19,8 +19,10 @@
 EDXAPP_LMS_BASE: ""
 EDXAPP_PREVIEW_LMS_BASE: ""
 EDXAPP_CMS_BASE: ""
-EDXAPP_AWS_ACCESS_KEY_ID:  ""
-EDXAPP_AWS_SECRET_ACCESS_KEY:  ""
+# 'None' will be written out as null in
+# the configuration on disk
+EDXAPP_AWS_ACCESS_KEY_ID:  "None"
+EDXAPP_AWS_SECRET_ACCESS_KEY:  "None"
 EDXAPP_XQUEUE_BASIC_AUTH: [ "{{ COMMON_HTPASSWD_USER }}", "{{ COMMON_HTPASSWD_PASS }}" ]
 EDXAPP_XQUEUE_DJANGO_AUTH:
   username: 'lms'
@@ -85,7 +87,7 @@ EDXAPP_CAS_ATTRIBUTE_PACKAGE: ""
 EDXAPP_ENABLE_AUTO_AUTH: false
 # Settings for enabling and configuring third party authorization
 EDXAPP_ENABLE_THIRD_PARTY_AUTH: false
-EDXAPP_THIRD_PARTY_AUTH: !!null
+EDXAPP_THIRD_PARTY_AUTH: "None"
 
 EDXAPP_FEATURES:
   AUTH_USE_OPENID_PROVIDER: true