Automatic merge from submit-queue (batch tested with PRs 43144, 42671, 43226, 43314, 43361) start informers as a post-start-hook Switches the shared informer start to a post start hook to make future API server composition easier. PostStartHooks will have to be unioned for server composition and this ensures that we don't accidentally skip starting them.
This staging/src/k8s.io/client-go directory is the staging area of the client repo. It contains a versioned client, tools built around the client like the reflector, and all the client dependencies. The content will be periodically published to k8s.io/client-go repo.
The staged content is copied from the main repo, i.e., k8s.io/kubernetes, with directory rearrangement and necessary rewritings. To sync the content with the latest code in your local k8s.io/kubernetes, you need to run godep restore in k8s root directory, then run staging/copy.sh.
vendor/k8s.io/client-go is a symlink pointing to this staging area, so to use the packages in the staging area, you can import it as "vendor/client-go/", as if the client were vendored. The client will be vendored from k8s.io/client-go for real after the test matrix is converted to vendor k8s components.