Using the OMCI-Sim library to respond to OMCI messages

Change-Id: I8a15f9dcb95fe8ce7b5f524d673d7c83882b6401
diff --git a/go.mod b/go.mod
index 515d233..72fdc6f 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,10 @@
 require (
 	github.com/golang/protobuf v1.3.2
 	github.com/looplab/fsm v0.1.0
+	github.com/opencord/omci-sim v0.0.0-20190717165025-5ff7bb17f1e9
 	github.com/opencord/voltha-protos v0.0.0-20190813191205-792553b747df
 	github.com/sirupsen/logrus v1.4.2
 	google.golang.org/grpc v1.22.1
 )
+
+replace github.com/opencord/omci-sim v0.0.0-20190717165025-5ff7bb17f1e9 => ./vendor/github.com/opencord/omci-sim
\ No newline at end of file