Add multiple kube-bench suggested modifications

All commits come from upstream contributed merge requests:

• 5ca33ee9 [cern] Fix kube-bench 1.2.1, 1.2.23, 1.3.1.
  • Set shorter apiserver timeout (from 60s to 10s)
  • decrease number of terminated pods to GC
  • Disallow anonymous auth
• ed7b8a3c [cern] Fix kube-bench 1.2.32 and 4.2.13
  • set TLS cypher-suits to use on kubelet and apiserver
• d6f950f7 [cern] Ensure kube-apiserver TLS connection to etcd server
  • set keys and certificates to use for connection with etcd server
• 303e6777 [cern] Add kube-bench disable profilling
  • disable profiling on kubernetes control plane components

Closes: https://gitlab.cern.ch/kubernetes/project/-/issues/251

magnum/drivers/common/templates/kubernetes/fragments/configure-kubernetes-master.sh

@@ -346,10 +346,12 @@ KUBE_API_ADDRESS="--bind-address=0.0.0.0 --secure-port=$KUBE_API_PORT"
 KUBE_API_ARGS="$KUBE_API_ARGS --authorization-mode=Node,RBAC --tls-cert-file=$CERT_DIR/server.crt"
 KUBE_API_ARGS="$KUBE_API_ARGS --tls-private-key-file=$CERT_DIR/server.key"
 KUBE_API_ARGS="$KUBE_API_ARGS --client-ca-file=$CERT_DIR/ca.crt"
+KUBE_API_ARGS="$KUBE_API_ARGS --etcd-cafile=$CERT_DIR/ca.crt --etcd-certfile=$CERT_DIR/server.crt --etcd-keyfile=$CERT_DIR/server.key"
 KUBE_API_ARGS="$KUBE_API_ARGS --service-account-key-file=${CERT_DIR}/service_account.key"
 KUBE_API_ARGS="$KUBE_API_ARGS --service-account-signing-key-file=${CERT_DIR}/service_account_private.key"
 KUBE_API_ARGS="$KUBE_API_ARGS --service-account-issuer=https://kubernetes.default.svc.cluster.local"
 KUBE_API_ARGS="$KUBE_API_ARGS --kubelet-certificate-authority=${CERT_DIR}/ca.crt --kubelet-client-certificate=${CERT_DIR}/server.crt --kubelet-client-key=${CERT_DIR}/server.key"
+KUBE_API_ARGS="$KUBE_API_ARGS --profiling=false"
 # Allow for metrics-server/aggregator communication
 KUBE_API_ARGS="${KUBE_API_ARGS} \
     --proxy-client-cert-file=${CERT_DIR}/server.crt \
@@ -359,6 +361,9 @@ KUBE_API_ARGS="${KUBE_API_ARGS} \
     --requestheader-extra-headers-prefix=X-Remote-Extra- \
     --requestheader-group-headers=X-Remote-Group \
     --requestheader-username-headers=X-Remote-User"
+KUBE_API_ARGS="$KUBE_API_ARGS --anonymous-auth=false"
+KUBE_API_ARGS="$KUBE_API_ARGS --request-timeout=10s"
+KUBE_API_ARGS="$KUBE_API_ARGS --tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
 
 KUBE_ADMISSION_CONTROL=""
 if [ -n "${ADMISSION_CONTROL_LIST}" ] && [ "${TLS_DISABLED}" == "False" ]; then
@@ -475,6 +480,8 @@ KUBE_CONTROLLER_MANAGER_ARGS="--leader-elect=true --kubeconfig=/etc/kubernetes/a
 KUBE_CONTROLLER_MANAGER_ARGS="$KUBE_CONTROLLER_MANAGER_ARGS --cluster-name=${CLUSTER_UUID}"
 KUBE_CONTROLLER_MANAGER_ARGS="${KUBE_CONTROLLER_MANAGER_ARGS} --allocate-node-cidrs=true"
 KUBE_CONTROLLER_MANAGER_ARGS="${KUBE_CONTROLLER_MANAGER_ARGS} --cluster-cidr=${CLUSTER_CIDR} ${NODE_CIDR_MASK_SIZE_IPV6}"
+KUBE_CONTROLLER_MANAGER_ARGS="${KUBE_CONTROLLER_MANAGER_ARGS} --profiling=false"
+KUBE_CONTROLLER_MANAGER_ARGS="${KUBE_CONTROLLER_MANAGER_ARGS} --terminated-pod-gc-threshold=200"
 KUBE_CONTROLLER_MANAGER_ARGS="$KUBE_CONTROLLER_MANAGER_ARGS $KUBECONTROLLER_OPTIONS"
 if [ -n "${ADMISSION_CONTROL_LIST}" ] && [ "${TLS_DISABLED}" == "False" ]; then
     KUBE_CONTROLLER_MANAGER_ARGS="$KUBE_CONTROLLER_MANAGER_ARGS --service-account-private-key-file=$CERT_DIR/service_account_private.key --root-ca-file=$CERT_DIR/ca.crt"
@@ -510,6 +517,7 @@ if [[ "${supported_min_version}" = "${min_version}" ]]; then
 else
     sed -i '/^KUBE_SCHEDULER_ARGS=/ s#=.*#="--leader-elect=true --kubeconfig=/etc/kubernetes/admin.conf"#' /etc/kubernetes/scheduler
 fi
+sed -i '/^KUBE_SCHEDULER_ARGS=/ s#="\(.*\)"#="\1 --profiling=false#' /etc/kubernetes/scheduler
 
 $ssh_cmd mkdir -p /etc/kubernetes/manifests
 KUBELET_ARGS="--register-node=true --pod-manifest-path=/etc/kubernetes/manifests --hostname-override=${INSTANCE_NAME}"
@@ -544,6 +552,7 @@ KUBELET_ARGS="${KUBELET_ARGS} --network-plugin=cni --cni-conf-dir=/etc/cni/net.d
 KUBELET_ARGS="${KUBELET_ARGS} --register-with-taints=node-role.kubernetes.io/master=:NoSchedule"
 KUBELET_ARGS="${KUBELET_ARGS} --node-labels=magnum.openstack.org/role=${NODEGROUP_ROLE}"
 KUBELET_ARGS="${KUBELET_ARGS} --node-labels=magnum.openstack.org/nodegroup=${NODEGROUP_NAME}"
+KUBELET_ARGS="${KUBELET_ARGS} --tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256"
 
 KUBELET_KUBECONFIG=/etc/kubernetes/kubelet-config.yaml
 cat << EOF >> ${KUBELET_KUBECONFIG}