Merge pull request #196 from andrewhsu/fix-lock

[17.07] vndr libnetwork to bring in lock fix

Author: andrewhsu

components/engine/vendor.conf

@@ -27,7 +27,7 @@ github.com/imdario/mergo 0.2.1
 golang.org/x/sync de49d9dcd27d4f764488181bea099dfe6179bcf0
 
 #get libnetwork packages
-github.com/docker/libnetwork 230db20572a70538227b65ca72f7627c8b2bae41
+github.com/docker/libnetwork 4a242dba7739bb7d4351b260863b5e8789ea5abe
 github.com/docker/go-events 18b43f1bc85d9cdd42c05a6cd2d444c7a200a894
 github.com/armon/go-radix e39d623f12e8e41c7b5529e9a9dd67a1e2261f80
 github.com/armon/go-metrics eb0af217e5e9747e41dd5303755356b62d28e3ec