Remove unnecessary netns switch for router in attach_router, and improve the name of the function which sends existing container data into the router
Remove unnecessary netns switch for router in attach_router,
and improve the name of the function which sends existing
container data into the router

n054/weave,n054/weave,n054/weave,weaveworks/weave,paulbellamy/weave,weaveworks/weave,n054/weave,weaveworks/weave,paulbellamy/weave,weaveworks/weave,paulbellamy/weave,paulbellamy/weave,n054/weave