supervisor-xqueue: Allow to override `LANG` for xqueue

playbooks/roles/xqueue/defaults/main.yml

@@ -39,6 +39,7 @@ XQUEUE_DJANGO_PASSWORD: 'password'
 XQUEUE_RABBITMQ_USER: 'edx'
 XQUEUE_RABBITMQ_PASS: 'edx'
 XQUEUE_RABBITMQ_HOSTNAME: 'localhost'
+XQUEUE_LANG: 'en_US.UTF-8'
 
 XQUEUE_MYSQL_DB_NAME: 'xqueue'
 XQUEUE_MYSQL_USER: 'root'

playbooks/roles/xqueue/templates/xqueue.conf.j2

@@ -9,7 +9,7 @@ command={{ xqueue_venv_dir }}/bin/gunicorn --preload -b {{ xqueue_gunicorn_host
 user={{ xqueue_user }}
 directory={{ xqueue_code_dir }}
 
-environment=PID=/var/tmp/xqueue.pid,PORT={{ xqueue_gunicorn_port }},ADDRESS={{ xqueue_gunicorn_host }},LANG=en_US.UTF-8,DJANGO_SETTINGS_MODULE=xqueue.aws_settings,SERVICE_VARIANT="xqueue"
+environment=PID=/var/tmp/xqueue.pid,PORT={{ xqueue_gunicorn_port }},ADDRESS={{ xqueue_gunicorn_host }},LANG={{ XQUEUE_LANG }},DJANGO_SETTINGS_MODULE=xqueue.aws_settings,SERVICE_VARIANT="xqueue"
 
 stdout_logfile={{ supervisor_log_dir }}/%(program_name)-stdout.log
 stderr_logfile={{ supervisor_log_dir }}/%(program_name)-stderr.log

playbooks/roles/xqueue/templates/xqueue_consumer.conf.j2

@@ -5,7 +5,7 @@ command={{xqueue_venv_dir}}/bin/django-admin.py run_consumer --pythonpath={{xque
 user={{ xqueue_user }}
 directory={{ xqueue_code_dir }}
 
-environment=LANG=en_US.UTF-8,WORKERS_PER_QUEUE={{xqueue_env_config.XQUEUE_WORKERS_PER_QUEUE}},SERVICE_VARIANT="xqueue"
+environment=LANG={{ XQUEUE_LANG }},WORKERS_PER_QUEUE={{xqueue_env_config.XQUEUE_WORKERS_PER_QUEUE}},SERVICE_VARIANT="xqueue"
 
 stdout_logfile={{ supervisor_log_dir }}/%(program_name)-stdout.log
 stderr_logfile={{ supervisor_log_dir }}/%(program_name)-stderr.log