Using latest omci-sim library

Change-Id: I34190a4575d0bef2c0274f6bd5a347d9e0959a3e
diff --git a/go.mod b/go.mod
index 523bc1a..a7c7b38 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@
 	github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024 // indirect
 	github.com/looplab/fsm v0.1.0
 	github.com/opencord/cordctl v0.0.0-20190909161711-01e9c1f04bf4
-	github.com/opencord/omci-sim v0.0.0-20190826212842-203314beba7e
+	github.com/opencord/omci-sim v0.0.0-20191011202236-3687c57a7252
 	github.com/opencord/voltha-protos v0.0.0-20190813191205-792553b747df
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/sirupsen/logrus v1.4.2