Implement logs model using Elasticsearch

- Implement logs model using Elasticsearch with tests
- Implement transition model using both elasticsearch and database model
- Add LOGS_MODEL configuration to choose which to use.

Co-authored-by: Sida Chen <sidchen@redhat.com>
Co-authored-by: Kenny Lee Sin Cheong <kenny.lee@redhat.com>

data/model/log.py

@@ -117,7 +117,7 @@ def log_action(kind_name, user_or_organization_name, performer=None, repository=
   else:
     account = config.app_config.get('SERVICE_LOG_ACCOUNT_ID')
     if account is None:
-      account = User.select(fn.Min(User.id)).tuples().get()[0]
+      account = user.get_minimum_user_id()
 
   if performer is not None:
     performer = performer.id