supervisor-ora: Allow to configure LANG for ora (`ORA_LANG`)

playbooks/roles/ora/defaults/main.yml

@@ -48,6 +48,7 @@ ORA_DEBUG: false
 ORA_SYSLOG_SERVER: "localhost"
 ORA_USE_S3_TO_STORE_MODELS: false
 ORA_S3_BUCKETNAME: "openended-prod"
+ORA_LANG: "en_US.UTF-8"
 
 ORA_USERS:
   "xqueue_pull": "password"

playbooks/roles/ora/templates/ora.conf.j2

@@ -5,8 +5,7 @@ command={{ ora_venv_bin }}/gunicorn --preload -b {{ ora_gunicorn_host }}:{{ ora_
 user={{ common_web_user }}
 directory={{ ora_code_dir }}
 
-# TODO: Make LANG a configuration variable
-environment=PID=/var/run/gunicorn/edx-ora.pid,WORKERS={{ ora_gunicorn_workers }},PORT={{ ora_gunicorn_port }},ADDRESS={{ ora_gunicorn_host }},LANG=en_US.UTF-8,DJANGO_SETTINGS_MODULE=edx_ora.aws,SERVICE_VARIANT=ora,NLTK_DATA={{ ora_nltk_data_dir }}
+environment=PID=/var/run/gunicorn/edx-ora.pid,WORKERS={{ ora_gunicorn_workers }},PORT={{ ora_gunicorn_port }},ADDRESS={{ ora_gunicorn_host }},LANG={{ ORA_LANG }},DJANGO_SETTINGS_MODULE=edx_ora.aws,SERVICE_VARIANT=ora,NLTK_DATA={{ ora_nltk_data_dir }}
 
 stdout_logfile={{ supervisor_log_dir }}/%(program_name)-stdout.log
 stderr_logfile={{ supervisor_log_dir }}/%(program_name)-stderr.log