
Automatic merge from submit-queue (batch tested with PRs 38294, 37009, 36778, 38130, 37835) Add a cloudprovider validator flag to kubeadm and update the DNS spec Broken out from: https://github.com/kubernetes/kubernetes/pull/37568 This PR creates a flag for `cloud-provider` that validates the value before `RunInit()` is run, which makes it now act as a "real" flag Then it removes the `k8s.io/kubernetes/pkg/cloudprovider` dependency, which makes the binary ~40MB smaller! That's _really_ worth it! In the second commit, the DNS addon is updated to the latest version: https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/dns/skydns-rc.yaml.base @kubernetes/sig-cluster-lifecycle