Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Add code-of-conduct.md to staging repos Instead of adding it directly to their published copies Replaces - https://github.com/kubernetes/api/pull/13 - https://github.com/kubernetes/apiextensions-apiserver/pull/21 - https://github.com/kubernetes/apimachinery/pull/33 - https://github.com/kubernetes/apiserver/pull/28 - https://github.com/kubernetes/client-go/pull/350 - https://github.com/kubernetes/code-generator/pull/29 - https://github.com/kubernetes/kube-aggregator/pull/11 - https://github.com/kubernetes/metrics/pull/12 - https://github.com/kubernetes/sample-apiserver/pull/18 - https://github.com/kubernetes/sample-controller/pull/3 ref: kubernetes/community#1527 Kubernetes-commit: 8a4a39d6ae1be45115c12cfa166f2c8151d88d8c
