Merge pull request #418 from edx/jarv/fix-discern-settings

fixing discern settings for discern_celery

playbooks/roles/discern/templates/discern_celery.conf.j2

 [program:discern_celery]
 
-command={{ discern_venv_bin }}/python {{ discern_code_dir }}/manage.py celeryd --loglevel=info --settings=edx_discern.aws --pythonpath={{ discern_code_dir }} -B --autoscale=4,1 --schedule={{ discern_data_dir }}/celerybeat-schedule
+command={{ discern_venv_bin }}/python {{ discern_code_dir }}/manage.py celeryd --loglevel=info --settings=discern.aws --pythonpath={{ discern_code_dir }} -B --autoscale=4,1 --schedule={{ discern_data_dir }}/celerybeat-schedule
 
 user={{ common_web_user }}
 directory={{ discern_code_dir }}
 
-environment=DJANGO_SETTINGS_MODULE=edx_discern.aws,SERVICE_VARIANT=discern
+environment=DJANGO_SETTINGS_MODULE=discern.aws,SERVICE_VARIANT=discern
 
 stdout_logfile={{ supervisor_log_dir }}/%(program_name)-stdout.log
 stderr_logfile={{ supervisor_log_dir }}/%(program_name)-stderr.log