Less verbose logs (#154)

- **Adjust logging level to be less verbose**

Author: Marenz

RELEASE_NOTES.md

@@ -11,6 +11,7 @@
 ## New Features
 
 * This release now supports the sdk up to rc2000.
+* Less logs are now on `INFO` level, and more on `DEBUG` level, making the output less verbose.
 
 ## Bug Fixes
 

src/frequenz/dispatch/_bg_service.py

@@ -296,7 +296,7 @@ async def _fetch(self) -> None:
         self._dispatches = {}
 
         try:
-            _logger.info("Fetching dispatches for microgrid %s", self._microgrid_id)
+            _logger.debug("Fetching dispatches for microgrid %s", self._microgrid_id)
             async for page in self._client.list(microgrid_id=self._microgrid_id):
                 for client_dispatch in page:
                     dispatch = Dispatch(client_dispatch)
@@ -314,15 +314,15 @@ async def _fetch(self) -> None:
                         )
                         await self._lifecycle_events_tx.send(Updated(dispatch=dispatch))
 
-            _logger.info("Received %s dispatches", len(self._dispatches))
+            _logger.debug("Received %s dispatches", len(self._dispatches))
 
         except grpc.aio.AioRpcError as error:
             _logger.error("Error fetching dispatches: %s", error)
             self._dispatches = old_dispatches
             return
 
         for dispatch in old_dispatches.values():
-            _logger.info("Deleted dispatch: %s", dispatch)
+            _logger.debug("Deleted dispatch: %s", dispatch)
             await self._lifecycle_events_tx.send(Deleted(dispatch=dispatch))
             await self._update_dispatch_schedule_and_notify(None, dispatch)