update for ONOS 1.10.3 support

Change-Id: Icb9f906ff289f8d0595072a983e13513dc37cb4f
diff --git a/.gitignore b/.gitignore
index 8f1c1a9..1154284 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,6 +35,9 @@
 voltha/**/*.desc
 **/*_pb2.py
 **/*_pb2_grpc.py
+envoy/proto.pb
+envoy/go/envoyd/buildreport
+envoy/go/envoyd/envoyd
 
 # Editors
 *.bak