Improve first_kube_control_plane variable management to avoid installation failures due to variable overlapping (#8388)

* Add kubectl variable

* Replace kubectl usage by kubectl variable in roles

* Remove redundant --kubeconfig on kubectl usage

* Replace unecessary shell usage with command

This reverts commit 4f2e4524.

* Ensure entries for 1.23 are added for supported_versions vars

* cri-o: add support for kubernetes 1.23 but still use cri-o 1.22

* kubescheduler-config: diferentiate config versions based on kube_version

"kubeadm alpha certs" command has been promoted to "kubeadm certs" command,
and "kubeadm alpha certs" has been deprecated since Kubernetes v1.20 as [1].
In addition, Kubespray supports Kubernetes v1.20+.
This delete the deprecated command for cleanup.

[1]: https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md#deprecation

* containerd: change default resolvconf_mode to host_resolvconf

* Wait for kube-apiserver to come back after pod refresh

* Handle resolv.conf gracefully

* Retain currently configured DNS entries to ensure we don't break the resolvers

* Suse uses wickedd for network management so no dhcp hooks

* Molecule: increase ansible timeout

* CI: Increase ansible timeout to 120s for Packet jobs

* Kata-Containers: add checksums for 2.3.0

* Kata-Containers: version 2.3.0 requires kubernetes 1.22.0+

* Update loadbalancers versions

* fix haproxy_config_dir mode

* Improve control plane scale flow (#13)

* Added version 1.20.10 of K8s

* Setting first_kube_control_plane to a existing one

* Setting first_kube_control_plane to a existing one

* change first_kube_master for first_kube_control_plane

* Ansible-lint changes

* if bind-address is not set to 0.0.0.0

* Update docs and left comments

* fix yamllist check: remove space

* Alpha-NodeSwap: allow nodes to use swap

* CI: Add Fedora 35 with experimental swap job

* Add Fedora 35 image, support and CI

* Cleanup tests and allow_failure for vagrant

Author:    lmercl <lubos.mercl@gmail.com>
Date:      Wed Nov 10 15:30:04 2021 +0000

fix markdown

Signed-off-by: EDGsheryl <edgsheryl@gmail.com>

This fixes the preinstall check for cloud_provider option based on
inventory/sample/group_vars/all/all.yml

* Containerd: download containerd from upstream instead of using distro specific packages

split runc download to separate role
make bootstrap-os role deploy container-selinux and seccomp libraries
clean up package manager provided containerd
move variables to docker role that are no longer common with containerd

* Containerd: make molecule testing more relevant

* replace ubuntu18 with ubuntu20
* add centos8 and debian11 to molecule tests
* run kubernetes/preinstall role to ensure relevancy
  of test including dependency packages

* CI: adjust test scenarios for downloaded containerd

* Add Rocky as a known OS

* Make sure Rocky includes bootstrap-centos.yml

* Update docs with Rocky Linux

* Rocky Linux wireguard and EPEL

* Rocky Linux in the list of supported distributions

* Add kubeadm_join_phases_skip variable

* Update kubeadm_join_phases_skip comment

Co-authored-by: Cristian Calin <6627509+cristicalin@users.noreply.github.com>

* Add kubeadm_join_phases_skip_default variable to follow the same logic with kubeadm_init_phases_skip

Co-authored-by: Cristian Calin <6627509+cristicalin@users.noreply.github.com>

to remove deprecation warning:

> Flag --feature-gates has been deprecated, This parameter should be set via the config file specified by the Kubelet's --config flag.

Closes https://github.com/kubernetes-sigs/kubespray/issues/8028



Signed-off-by: Iago Santos <iago.santos.pardo@adfinis.com>

Kubespray deployment failed when using containerd backend on nodes that apparmor was not installed or previously removed. This PR ensure apparmor is installed by adding it into required_pkgs var.

Kubespray deployment failed when using containerd backend on nodes that apparmor was not installed or previously removed. This PR ensure apparmor is installed by adding it into required_pkgs var.

The path of kubeconfig should be configurable, and its default value
is /etc/kubernetes/admin.conf. Most paths of the file are configurable
but some were not. This make those configurable.

and kubelet_shutdown_grace_period_critical_pods as ansible cannot do
sane time interval calculations

Signed-off-by: Wang Zhen <lazybetrayer@gmail.com>

* Calico: make calico_min_version check relevant

* Calico: only check currently installed version against the oldest supported version by the previous release

Add option to kubeadm upgrade command to control certificates renewal during control plane upgrade (#7976)

* Add option to kubeadm upgrade command to control certificates renewal during control plane upgrade

* Remove training whitespace