The version 1.4 of containerd has been End of Life since March 3, 2022
as https://containerd.io/releases/#support-horizon
It is nice to drop the support from Kubespray also to follow containerd.

Signed-off-by: Lubos Mercl <lubos.mercl@gmail.com>

* [openstack] fix for new network modules

* [openstack] for-each master nodes

containerd version 1.6.3 has been released as [1]
This adds the checksums and makes Kubespray use it.

[1]: https://github.com/containerd/containerd/releases/tag/v1.6.3

tests/requirements.txt links to tests/requirements-2.12.txt, so
Kubespray uses ansible 2.12 by default for testing. However we
forgot to update testcases_prepare.sh to use ansible 2.12.
This updates testcases_prepare to use ansible 2.12.

* chore: change flannel repository and upgrade image version

* docs: upgrade flanneld version

* feat: add support for EventRateLimit admission plugin

* docs: add documentation about admission_control_config_file and EventRateLimit configuration

* Force containerd service unmasking

Force systemd to unmask and start service when adding containerd service

* Eliminate restart and move unmasking step

Switch to start instead of restart
Move unmasking to restart handler

* Add unmasking to similar container runtimes

* Add missing service names

* check calico ipv6

* just check ipip mode for ipv6

* add parametrization to molecule_run.sh

* [CI] split molecule tests to allow parallelization of work

* [kubernetes] add hashes for 1.22.9

aufs-tools was required for docker.io package originally,
but Kubespray installs docker-ce package instead today.
In addition, Ubuntu 20.04 doesn't provide aufs-tools as [1].
Then this removes aufs-tools from Ubuntu requirement.

[1]: https://bugs.launchpad.net/ubuntu/+source/aufs-tools/+bug/1947004

* [terraform] use modern day equinix metal provider

* [CI] ensure packet job tests metal

Since https://github.com/kubernetes-sigs/kubespray/pull/8434

* kata container related options exist in k8s-cluster.yml,
  not k8s_cluster.yml

* https://github.com/kata-containers/runtime has been archived and
  https://github.com/kata-containers/kata-containers is used today.

* Update verbs for volumeattachments resource

Update verbs for volumeattachments resource so that the kubelet can create volumeattachments and mount volumes when deploying Kubernetes on VMware vSphere.

* Update verbs for volumeattachments resource

Update verbs for volumeattachments resource to match upstream

* Update vsphere-csi-controller-rbac.yml.j2

* Update flannel use install-cni-plugin to fit upstream

* Replace flannel cni repo

* Remove download flannel binary

* [etcd] ensure etcd is properly upgraded when managed by kubeadm

* [CI] add periodic job to test upgrade of etcd managed by kubeadm

For offline mode

* As per this issue https://github.com/kubernetes-sigs/kubespray/pull/8664 I propose to make etcd v.3.5.3 default for any kubernetes version which uses 3.5.x since that 3.5.[0-2] not recommended for production.

Add tag to AWS VPC subnets for automatic subnet discovery by load balancers or ingress controllers (#8705)