qa: fix node names in threaded test logs

Resetting a storage node could mark all TEST log entries as being
emitted by this storage node. For example:

16:18:12.9114 S2         #0x0007 AskStoreObject                 > S1 (...)

neo/tests/threaded/__init__.py

@@ -455,6 +455,10 @@ class StorageApplication(ServerNode, neo.storage.app.Application):
         if self.master_conn:
             self.master_conn.close()
 
+    def loadConfiguration(self):
+        with Patch(logging, name=self.node_name):
+            super(StorageApplication, self).loadConfiguration()
+
     def getAdapter(self):
         return self._init_args['adapter']