[VOL-2254] Fix for unit test failing

Change-Id: I646fc9865c096c65b7d0660b1654955d55ba3951
diff --git a/vendor/modules.txt b/vendor/modules.txt
index a6b0745..4927336 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -104,6 +104,8 @@
 github.com/opencord/voltha-protos/v2/go/tech_profile
 github.com/opencord/voltha-protos/v2/go/common
 github.com/opencord/voltha-protos/v2/go/omci
+# github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
+github.com/phayes/freeport
 # github.com/pierrec/lz4 v2.3.0+incompatible
 github.com/pierrec/lz4
 github.com/pierrec/lz4/internal/xxh32