Add support for deploying testdays via s2i

- Tweak gunicorn's configuration for logging
- Adjust the requirements to include what is needed for s2i
- Add a wsgi.py script to start the application

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

.s2i/environment

@@ -0,0 +1,2 @@
+UPGRADE_PIP_TO_LATEST=1
+APP_CONFIG=/opt/app-root/src/gunicorn.cfg

gunicorn.cfg

@@ -0,0 +1,5 @@
+import logging
+import sys
+
+gunicorn_logger = logging.getLogger('gunicorn.error')
+gunicorn_logger.addHandler(logging.StreamHandler(sys.stdout))

requirements.txt

@@ -9,3 +9,6 @@ Flask-Caching
 alembic
 resultsdb-api
 python-fedora
+# Requirements - only for s2i support
+gunicorn
+psycopg2

wsgi.py

@@ -0,0 +1 @@
+from testdays import app as application