[VOL-4291] Rw-core updates for gRPC migration

Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/wrappers.go b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/wrappers.go
index 597b862..05ccfb3 100644
--- a/vendor/github.com/grpc-ecosystem/go-grpc-middleware/wrappers.go
+++ b/vendor/github.com/grpc-ecosystem/go-grpc-middleware/wrappers.go
@@ -4,7 +4,8 @@
 package grpc_middleware
 
 import (
-	"golang.org/x/net/context"
+	"context"
+
 	"google.golang.org/grpc"
 )