Adding go.mod and go.sum

Change-Id: I585ea68b491847349b626c252d7134cf49beac65
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..33ce61d
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module github.com/opencord/device-management-interface
+
+go 1.13
+
+require (
+	github.com/golang/protobuf v1.4.2
+	google.golang.org/grpc v1.29.1
+)