Define well-known certificate names that can be used in PKI.spec.overrides for fine-grained configuration.Certificate names to define (SignerCertificate category):*Control Plane Signers: kube-apiserver-to-kubelet-signer* kube-control-plane-signer* kube-apiserver-server-ca* kube-apiserver-client-caetcd Signers:* etcd-signer* etcd-serving-caService and Kubelet Signers:* service-ca* kubelet-serving-caAuthentication Signers:* csr-signer-ca* admin-kubeconfig-signer* kubelet-bootstrap-kubeconfig-signer*Implementation:** Define as string constants in openshift/api* Document in API godoc* Document in enhancement* Create reference documentation*Note:* This list may be extended in future releases.Acceptance:* Constants defined in config/v1alpha1 package* Each constant documented with purpose and owner operator* Reference documentation created* Enhancement updated with complete list