Add SYNCSERVER_FORCE_WSGI_ENVIRON to list of configuration options that can be set via environment variables (#100); r=rfk

syncserver/__init__.py

@@ -143,6 +143,9 @@ def import_settings_from_environment_variables(settings, environ=None):
         ("SYNCSERVER_ALLOW_NEW_USERS",
          "syncserver.allow_new_users",
          str_to_bool),
+        ("SYNCSERVER_FORCE_WSGI_ENVIRON",
+         "syncserver.force_wsgi_environ",
+         str_to_bool),
         ("SYNCSERVER_BATCH_UPLOAD_ENABLED",
          "storage.batch_upload_enabled",
          str_to_bool),