peekaboo: Sync config file once more

Add the asyncio_driver default config option to our peekaboo.conf file
to get back in sync with PeekabooAV.

Author: michaelweiser

peekaboo/peekaboo.conf

@@ -57,6 +57,10 @@ url             :    mysql+mysqldb://peekaboo:{{ peekaboo_db_password }}@{{ mari
 # PostgreSQL
 # url             :    postgresql://user:password@host:port/database
 
+# as a last resort it's possible to override the driver for asyncio database
+# accesses if auto-detection fails.
+# async_driver: aiosqlite
+
 # Enable additional logging by the SQLAlchemy database module beyond Peekaboo's
 # own logging. Can be considered another set of debug logging even beyond
 # Peekaboo's DEBUG log level.