Improve variable names.

playbooks/roles/edxapp/defaults/main.yml

@@ -442,8 +442,8 @@ EDXAPP_CELERY_WORKERS:
 
 EDXAPP_DEFAULT_CACHE_VERSION: "1"
 EDXAPP_OAUTH_ENFORCE_SECURE: True
-EDXAPP_OAUTH_EXPIRE_DELTA_DAYS: 365
-EDXAPP_OAUTH_EXPIRE_DELTA_PUBLIC_DAYS: 30
+EDXAPP_OAUTH_EXPIRE_CONFIDENTIAL_CLIENT_DAYS: 365
+EDXAPP_OAUTH_EXPIRE_PUBLIC_CLIENT_DAYS: 30
 
 # Directory for edxapp application configuration files
 EDXAPP_CFG_DIR: "{{ COMMON_CFG_DIR }}/edxapp"
@@ -866,8 +866,8 @@ lms_auth_config:
 lms_env_config:
   <<: *edxapp_generic_env
   OAUTH_ENFORCE_SECURE: "{{ EDXAPP_OAUTH_ENFORCE_SECURE }}"
-  OAUTH_EXPIRE_DELTA_DAYS: "{{ EDXAPP_OAUTH_EXPIRE_DELTA_DAYS }}"
-  OAUTH_EXPIRE_DELTA_PUBLIC_DAYS: "{{ EDXAPP_OAUTH_EXPIRE_DELTA_PUBLIC_DAYS }}"
+  OAUTH_EXPIRE_CONFIDENTIAL_CLIENT_DAYS: "{{ EDXAPP_OAUTH_EXPIRE_CONFIDENTIAL_CLIENT_DAYS }}"
+  OAUTH_EXPIRE_PUBLIC_CLIENT_DAYS: "{{ EDXAPP_OAUTH_EXPIRE_PUBLIC_CLIENT_DAYS }}"
   PAID_COURSE_REGISTRATION_CURRENCY: "{{ EDXAPP_PAID_COURSE_REGISTRATION_CURRENCY }}"
   GIT_REPO_DIR: "{{ EDXAPP_GIT_REPO_DIR }}"
   SITE_NAME:  "{{ EDXAPP_LMS_SITE_NAME }}"