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

* Improve scale flow

* Add confirmation prompt again

* Calico: align manifests with upstream

* allow enabling typha prometheus metrics

* Calico: enable eBPF support

* manage the kubernetes-services-endpoint configmap

* Calico: document the use of eBPF dataplane

* Calico: improve checks before deployment

* enforce disabling kube-proxy when using eBPF dataplane
* ensure calico_version is supported

* Kata: add Kata 2.x checksums and adjust download urls for 2.x

* Kata: drop 1.x version which is no longer supported

* Kata: set default version 2.1.0

* Docs: update sidebar

* Docs: move registry documentation into docs/

* Docs: move rbd_provisioner documentation into docs/

* Docs: move cephfs_provisioner into docs/

* Docs: move local_volume_provisioner documentation into docs/

* Docs: move ambassador.md to docs/ingress_controller/

* Docs: move metallb.md to docs/ingress_controller/

* Docs: move ingress_nginx documentation into docs/

* Docs: move alb_ingress_controller documentation into docs/

* Docs: merge ambassador documentation into docs/ingress_controller/

* Docs: move cert_manager documentation into docs/

* Docs: move bootstrap-os documentation into docs/

* Docs: update file locations in sidebar

Signed-off-by: Cedric Hnyda <cedric.hnyda@itera.io>

Signed-off-by: kjinan <2008kongxiangsheng@163.com>

* Update docker package to 20.10.6

* Add Fedora 33 image and CI, remove Fedora 31 (EOL)

Checksum of crun 0.19 is not correct, this commit fixes it

* Added possibility to specify vSphere credentials via env variables

* Removed excessive spacing

store openstack external cloud controller ca.cert in a k8s secret instead of the host filesystem (#7603)

* Calico: add v3.19.1 hashes

* enable liveness probe for calico-kube-controllers

3.19.1

* Calico: drop support for v3.16.x

* Calico: promote v3.18.3 as default