Revert "Add cluster up configuration for certificate signing duration."

This reverts commit bd0c16cc8e.

cluster/common.sh

@@ -865,11 +865,6 @@ EOF
     if [ -n "${ETCD_QUORUM_READ:-}" ]; then
       cat >>$file <<EOF
 ETCD_QUORUM_READ: $(yaml-quote ${ETCD_QUORUM_READ})
-EOF
-    fi
-    if [ -n "${CLUSTER_SIGNING_DURATION:-}" ]; then
-      cat >>$file <<EOF
-CLUSTER_SIGNING_DURATION: $(yaml-quote ${CLUSTER_SIGNING_DURATION})
 EOF
     fi
 

cluster/gce/config-default.sh

@@ -314,9 +314,6 @@ ENABLE_PROMETHEUS_TO_SD="${ENABLE_PROMETHEUS_TO_SD:-false}"
 # Optional: Run kube-proxy as a DaemonSet if set to true, run as static pods otherwise.
 KUBE_PROXY_DAEMONSET="${KUBE_PROXY_DAEMONSET:-false}" # true, false
 
-# Optional: duration of cluster signed certificates.
-CLUSTER_SIGNING_DURATION="${CLUSTER_SIGNING_DURATION:-}"
-
 # Optional: enable pod priority
 ENABLE_POD_PRIORITY="${ENABLE_POD_PRIORITY:-}"
 if [[ "${ENABLE_POD_PRIORITY}" == "true" ]]; then

cluster/gce/config-test.sh

@@ -372,9 +372,6 @@ ENABLE_PROMETHEUS_TO_SD="${ENABLE_PROMETHEUS_TO_SD:-true}"
 # Optional: Run kube-proxy as a DaemonSet if set to true, run as static pods otherwise.
 KUBE_PROXY_DAEMONSET="${KUBE_PROXY_DAEMONSET:-false}" # true, false
 
-# Optional: duration of cluster signed certificates.
-CLUSTER_SIGNING_DURATION="${CLUSTER_SIGNING_DURATION:-30m}"
-
 # Optional: enable pod priority
 ENABLE_POD_PRIORITY="${ENABLE_POD_PRIORITY:-}"
 if [[ "${ENABLE_POD_PRIORITY}" == "true" ]]; then

cluster/gce/gci/configure-helper.sh

@@ -1535,10 +1535,6 @@ function start-kube-controller-manager {
   if [[ -n "${VOLUME_PLUGIN_DIR:-}" ]]; then
     params+=" --flex-volume-plugin-dir=${VOLUME_PLUGIN_DIR}"
   fi
-  if [[ -n "${CLUSTER_SIGNING_DURATION:-}" ]]; then
-    params+=" --experimental-cluster-signing-duration=$CLUSTER_SIGNING_DURATION"
-  fi
-
   local -r kube_rc_docker_tag=$(cat /home/kubernetes/kube-docker-files/kube-controller-manager.docker_tag)
   local container_env=""
   if [[ -n "${ENABLE_CACHE_MUTATION_DETECTOR:-}" ]]; then