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

Change-Id: I1aa2774beb6b7ed7419bc45aeb53fcae8a8ecda0
diff --git a/vendor/github.com/jonboulle/clockwork/.gitignore b/vendor/github.com/jonboulle/clockwork/.gitignore
index 010c242..00852bd 100644
--- a/vendor/github.com/jonboulle/clockwork/.gitignore
+++ b/vendor/github.com/jonboulle/clockwork/.gitignore
@@ -1,3 +1,5 @@
+/.idea/
+
 # Compiled Object files, Static and Dynamic libs (Shared Objects)
 *.o
 *.a