Docker: replace the use of containerd_version with docker_containerd_version to avoid causing conflicts when bumping containerd_version (#8130)

* cert-manager: add trusted internal ca when configured

* wrong check for inventory variable

* Update documentation

I guess `kubernetes-the-hard-way` should be `kubernetes-the-kubespray-way` because of recently created network name is `kubernetes-the-kubespray-way`.

* netchecker: update images to 1.2.2 from Mirantis which is slightly less ancinet than the l23networks images

* Netchecker: use local etcd instead of kubernetes v1beta1 crds which are no longer suported by kube 1.22+

* 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

* cert-manager: update to 1.5.4

* cert-manager: remove outdated guidelines on creating an initial ClusterIssuer

* Fix invalid link to Ansible documentation

* Fix invalid link to mitogen doc page

* Fix invalid link to calico doc page

* Fix all invalid links to doc pages

* Sample-Inventory: add sample for calico_bpf_enabled

* Calico-Doc: note about CONFIG_NET_SCHED for eBPF support

* CI: Add Calico eBPF in HA mode test

* Fedora and RHEL use etc_t and the convention is <type_name>_t

* Docs: specify all values for preinstall_selinux_state

* CI: Add Fedora 34 with SELinux in enforcing mode

Now that 1.10 is out this is to make 1.9.9 the default. I am running
this version successfully.

Changes:
  * ClusterRole updated according to the latest manifests from
    https://github.com/kubernetes/cloud-provider-vsphere


  * vSphere CPI/CSI default versions bumped and
    tested successfully on K8S 1.21.1
  * vSphere documentation updated

Signed-off-by: Vitaliy D <vi7alya@gmail.com>

non-kubeadm mode has been removed since ddffdb63
2.5 years ago. The non-kubeadm makes unnecessary confusion today, then
this updates the documentation.

- Added a hint about the kube_proxy_strict_arp configuration, which is required for MetalLB to work
 - See also https://github.com/kubernetes-sigs/kubespray/pull/5180/files

* set selinux type t_etc if selinux state is enforcing

* workaround with update repo is no longer needed
remove comments about failing playbook

* grubby is not available in distros using ostree

* remove docker support because removed in fcos
update install script example with live rootfs

* do not call grubby on ostree based distro

* update docs enabling containerd on fedora coreos

* Ansible: move to Ansible 3.4.0 which uses ansible-base 2.10.10

* Docs: add a note about ansible upgrade post 2.9.x

* CI: ensure ansible is removed before ansible 3.x is installed to avoid pip failures

* Ansible: use newer ansible-lint

* Fix ansible-lint 5.0.11 found issues

* syntax issues
* risky-file-permissions
* var-naming
* role-name
* molecule tests

* Mitogen: use 0.3.0rc1 which adds support for ansible 2.10+

* Pin ansible-base to 2.10.11 to get package fix on RHEL8

* Update vars.md to remove mention of string syntax of node_labels

Fixes https://github.com/kubernetes-sigs/kubespray/issues/6215

* Try fix makrdown linting

* Update docs/vars.md

* Update nodes.md

* fix syntax

* fix syntax - part 2

* replace master with kube_control_plane

* return etcd-master

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

* Claico Docs: clarify the algorithm to calculate calico_veth_mtu

* Update sample calico_veth_mtu

* Calico: add Wireguard support

* CI: Add Calico Wireguard scenario

* fix broken link in doc

* Revert "fix broken link in doc"

This reverts commit b427d1f57ff35375a97444f79eb06caf608c75d7.

* move metallb doc to right place, fixing broken link