To download necessary files in advance for offline deployment,
we can see all file URLs with contrib/offline/generate_list.sh
Most URLs are downloadable, but gvisor's one is not because the
URL is a part of full URLs for gvisor.
To download gvisor's files from the URLs directory, this separates
into two URLs for runsc and the shim.

* csi-driver: Added possibility to use application credentials for cinder

* external-cloud-controller: Added env vars for openstack application credentials

* 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

Clean up extra spaces, although these errors are not important, they affect the code specification.

* 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

* Fix ansible detection for python3 and ubuntu

* Fix oracle missing centos-extras repo for containerd/docker dependencies

* replaced deprecated python package with python3 package

* removed the version due to duplication

When reset, need to clean up directory /usr/libexec.

Although these errors are not important, they affect the code specification.

* Enable Graceful Node Shutdown for Kubernetes >= 1.21.0

* Add sample graceful shutdown parameters

* Calico: add Wireguard support

* CI: Add Calico Wireguard scenario

When reset, need to clean up files kube_proxy-ipvs.conf and kubespray-br_netfilter.conf.

* fix group name

* fix external-openstack-cloud-config secret

* don't add ca.cert in the secret if not defined

* Clean up residual files

When reset, you need to clean up to the kerw directory.

* Update main.yml

* Docker/Containerd: move downloads urls to containerd-common

* gVisor: initial support for gVisor container runtime

$releasever can be 7Server, but there is no such CentOS path on
download.opensuse.org.

Use ansible_distribution_major_version instead of $releasever.

As [1], v2.4.0 has been released already for local_volume_provisioner.
This updates the version.

[1]: https://github.com/kubernetes-sigs/sig-storage-local-static-provisioner/tags