make test: reset object registry if vpp dies

Change-Id: If0e30837e07a21f3912676f5147cb242d3d2b235
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/test/framework.py b/test/framework.py
index b9a09de..b7e6b4a 100644
--- a/test/framework.py
+++ b/test/framework.py
@@ -352,6 +352,8 @@
             os.rename(tmp_api_trace, vpp_api_trace_log)
             self.logger.info(self.vapi.ppcli("api trace dump %s" %
                                              vpp_api_trace_log))
+        else:
+            self.registry.unregister_all(self.logger)
 
     def setUp(self):
         """ Clear trace before running each test"""