Better exceptions handling (#169)

Author: bakwc

mysql_ch_replicator/binlog_replicator.py

@@ -536,7 +536,7 @@ def run(self):
             except OperationalError as e:
                 logger.error(f'operational error {str(e)}', exc_info=True)
                 time.sleep(15)
-            except Exception:
+            except Exception as e:
                 logger.error(f'unhandled error {str(e)}', exc_info=True)
                 raise