Change "ubuntu_repo" to "debian_repo" for containerd_debian_repo_base_url and containerd_debian_repo_gpgkey

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

* Add optional NAT support in calico router mode

* Add a blank line in front of lists

* Remove mutual exclusivity: NAT and router mode

* Ignore router mode from NAT

* Update calico doc

Signed-off-by: cleverhu <shouping.hu@daocloud.io>

Signed-off-by: cleverhu <shouping.hu@daocloud.io>

* WIP: sometimes,we not run etcd

* fix ansible lint

* like calico(kdd) cni, no need run etcd

Since the commit fad29661 cri_dockerd_enabled
has not been used. But the packet_ubuntu22-aio-docker.yml still contains
the configuration and causes confusions.
This removes the configuration for cleanup.

* add retries for restart of kube-apiserver

* change var name

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

Signed-off-by: hang.jiang <hang.jiang@daocloud.io>

Signed-off-by: hang.jiang <hang.jiang@daocloud.io>

* feat: add kubelet systemd service hardening option

* refactor: move variable name to kubelet_secure_addresses

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

* docs: add diagram about kubelet_secure_addresses variable

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

* fix-kube-vip-strict-arp

* fix-kube-vip-strict-arp

It seems that PR #8839 broke `calico_datastore: etcd` when it removed ipamconfig support for etcd mode.

This PR fixes some failing tasks when `calico_datastore == etcd`, but it does not restore ipamconfig support for calico in etcd mode. If someone wants to restore ipamconfig support for `calico_datastore: etcd` please submit a follow up PR for that.

* add pre-commit hook configuration

* add tmp.md to .gitignore

* describe the use of pre-commit hook in CONTRIBUTING.md

* fix docs/integration.md errors identified by markdownlint

* fix docs/<file>.md errors identified by markdownlint

* docs/azure-csi.md
* docs/azure.md
* docs/bootstrap-os.md
* docs/calico.md
* docs/debian.md
* docs/fcos.md
* docs/vagrant.md
* docs/gcp-lb.md
* docs/kubernetes-apps/registry.md
* docs/setting-up-your-first-cluster.md
* docs/vagrant.md
* docs/vars.md

* fix contrib/<file>.md errors identified by markdownlint

* cri-dockerd: add restart of docker.service

* remove enabling of cri-dockerd.socket