Updated language code and cookie for ecommerce

CHANGELOG.md

+- Role: ecommerce
+  - Added ECOMMERCE_LANGUAGE_COOKIE_NAME which is the name of the cookie the ecommerce django app looks at for determining the language preference.
+  
 - Role: neo4j
   - Enabled splunk forwarding for neo4j logs.
   - Increased maximum amount of open files to 40000, as suggested by neo4j.

playbooks/roles/ecommerce/defaults/main.yml

@@ -50,7 +50,8 @@ ECOMMERCE_OIDC_LOGOUT_URL: '{{ EDXAPP_LMS_ROOT_URL | default("http://127.0.0.1:8
 ECOMMERCE_SESSION_EXPIRE_AT_BROWSER_CLOSE: false
 ECOMMERCE_SECRET_KEY: 'Your secret key here'
 ECOMMERCE_TIME_ZONE: 'UTC'
-ECOMMERCE_LANGUAGE_CODE: 'en-us'
+ECOMMERCE_LANGUAGE_CODE: 'en'
+ECOMMERCE_LANGUAGE_COOKIE_NAME: 'openedx-language-preference'
 ECOMMERCE_EDX_API_KEY: 'PUT_YOUR_API_KEY_HERE'  # This should match the value set for edxapp
 ECOMMERCE_ECOMMERCE_URL_ROOT: 'http://localhost:8002'
 ECOMMERCE_LOGOUT_URL: '{{ ECOMMERCE_ECOMMERCE_URL_ROOT }}/logout/'
@@ -146,6 +147,7 @@ ECOMMERCE_SERVICE_CONFIG:
 
   SECRET_KEY: '{{ ECOMMERCE_SECRET_KEY }}'
   TIME_ZONE: '{{ ECOMMERCE_TIME_ZONE }}'
+  LANGUAGE_COOKIE_NAME: '{{ ECOMMERCE_LANGUAGE_COOKIE_NAME }}'
   LANGUAGE_CODE: '{{ ECOMMERCE_LANGUAGE_CODE }}'
   EDX_API_KEY: '{{ ECOMMERCE_EDX_API_KEY }}'
   OSCAR_FROM_EMAIL: '{{ ECOMMERCE_OSCAR_FROM_EMAIL }}'