Fix logger name on TRsync

Change-Id: Ic5c0e8858ba807e3b7dfe123e00cb6c180646d69
diff --git a/trsync/objects/rsync_mirror.py b/trsync/objects/rsync_mirror.py
index 0156f5a..2647d0f 100644
--- a/trsync/objects/rsync_mirror.py
+++ b/trsync/objects/rsync_mirror.py
@@ -44,7 +44,7 @@
             rsync_url,
             init_directory_structure=init_directory_structure,
             **kwargs)
-        self._log = utils.logger.getChild('TRsync' + rsync_url)
+        self._log = utils.logger.getChild('TRsync.' + rsync_url)
         self._snapshots_dir = self.url.a_dir(snapshots_dir)
         self._latest_successful_postfix = latest_successful_postfix
         self._snapshot_lifetime = snapshot_lifetime