e11020fa39
Automatic merge from submit-queue kubeadm: Implementing the certificates phase fully **What this PR does / why we need it:** This contains implementation of certs phases in kubeadm, which is part of the wider effort of implementing phases in kubeadm, previously in alpha stage. The original proposal for this activity can be found [here](https://github.com/kubernetes/kubeadm/pull/156/files) and related comments. Kubeadm phase implementation checklist is defined [here](https://github.com/kubernetes/kubeadm/issues/267) Common implementation guidelines and principles for all phases are defined [here](https://docs.google.com/document/d/1VQMyFIVMfRGQPP3oCUpfjiWtOr3pLxp4g7cP-hXQFXc/edit?usp=sharing) This PR implements: - [x] kubeadm phase certs - [x] kubeadm phase certs all - [x] kubeadm phase certs ca - [x] kubeadm phase certs apiserver - [x] kubeadm phase certs apiserver-kubelet-client - [x] kubeadm phase certs sa - [x] kubeadm phase certs front-proxy-ca - [x] kubeadm phase certs front-proxy-client **Which issue this PR fixes:** none **Special notes for your reviewer:** This PR resubmits the work of #45617, and already includes @luxas reviews. Please note that: - the API - phase\certs.go - is now totally free by any UX concerns, and implements only the core logic for cert generation. - the UX - cmd\phase\certs.go - now takes charge of UX commands and kubeadm own's rules for placing certs in the certificate dir (e.g. create only if exists)
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