VOL-4427: Clear stale keys from etcd

Change-Id: I5e09248ab8f6be48aa164d1e8025cb2be2b379dd
diff --git a/go.mod b/go.mod
index 2eb0e11..44bdffd 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/protobuf v1.5.2
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
-	github.com/opencord/voltha-lib-go/v7 v7.0.4
+	github.com/opencord/voltha-lib-go/v7 v7.0.6
 	github.com/opencord/voltha-protos/v5 v5.0.0
 	go.etcd.io/etcd v3.3.25+incompatible
 	google.golang.org/grpc v1.41.0