extra filter to not copy all restart files each cycle

gridded/da/tm5/observationoperator.py

@@ -341,7 +341,7 @@ class TM5ObservationOperator(ObservationOperator):
 
         sourcedir = self.dacycle['dir.restart']
         targetdir = self.tm_settings['restart.write.dir']
-        filterlist = '%s' % self.da_cycle['time.sample.start']
+        filterlist = '%s' % self.dacycle['time.sample.start']
 
         for f in os.listdir(sourcedir):
             fpath = os.path.join(sourcedir, f)