Signed-off-by: Fish-pro <zechun.chen@daocloud.io>

This replaces master with "control plane" in Kubespray docs
because of [1].

[1]: https://github.com/kubernetes/enhancements/blob/master/keps/sig-cluster-lifecycle/kubeadm/2067-rename-master-label-taint/README.md#motivation

It's a minor change, I just corrected `–` char to `-`.

Signed-off-by: Brendan Holmes <5072156+holmesb@users.noreply.github.com>

Although it is spelling mistakes, it might make affect while reading.

Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

Signed-off-by: Rui Cao <ruicao@alauda.io>

Signed-off-by: William Zhang <zhang.wanmin@zte.com.cn>

- Exclude kubelet CPU/RAM (kube-reserved) from cgroup. It decreases a
  chance of overcommitment
- Add a possibility to modify Kubelet node-status-update-frequency
- Add a posibility to configure node-monitor-grace-period,
  node-monitor-period, pod-eviction-timeout for Kubernetes controller
  manager
- Add Kubernetes Relaibility Documentation with recomendations for
  various scenarios.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>