[VOL-4290] Voltha go library updates for gRPC migration

Change-Id: I1aa2774beb6b7ed7419bc45aeb53fcae8a8ecda0
diff --git a/vendor/go.uber.org/multierr/.gitignore b/vendor/go.uber.org/multierr/.gitignore
index 61ead86..b9a05e3 100644
--- a/vendor/go.uber.org/multierr/.gitignore
+++ b/vendor/go.uber.org/multierr/.gitignore
@@ -1 +1,4 @@
 /vendor
+cover.html
+cover.out
+/bin