* Add support for arm images for hyperkube, kubeadm and cni_binary

* Add dummy etcd checksum for arm

This commit adds dummy etcd checksum for arm to avoid "no attribute" error
during setup.

* Add etcd host assert check

* Add 1.13.4 checksums of kubeadm and hyperkube for arm

* Update checksums of kubeadm and hyperkube for arm

* Add dummy checksums for calicoctl_binary_checksums dict

* disable gather_facts because it causes tests to fail

* Remove architecture check for etcd, due to unable to run tests

* Fix certificate-key param for kubeadm init

* Fix yamllint error

* Added pod psp in Rancher Local Path Provisioner

Added pod security policy (psp) in Rancher Local Path Provisioner.

Signed-off-by: André R. de Miranda <andre@miranda.work>

* Apply psp for Rancher Local Path Provisioner only when local_path_provisioner_namespace is not kube-system and also reorganized the templates

Kubespray waits exit of every drain before run other one.
Running drain every after each other seems better than parallel, because we should check resources availability every time.
But, this way, we have one additional problem: possible restart pods on the nodes that are killed little bit later.
Fast cordon before heavy drain seems like an easy solution.

Error starting nginx because in requiredDropCapabilities is dropped all capabilities.

The nginx requires the following capabilities:
- CHOWN
- SETGID
- SETUID

Signed-off-by: André R. de Miranda <andre@miranda.work>

... kube-node or etcd is empty" task
As a assert must be ignored if ignore_assert_errors is true

- Add loadbalancer_apiserver.address to apiserver_sans

Without this, pulls are considered for all
hosts groups, even if not targetted by the downloads
`groups` list. Hence, a download/sync is triggered
even though the host does not require the image.

* Add sha256 hashes for calicoctl v3.6.1

Hashes are added to calicoctl_binary_checksums for both adm and arm platforms.

* Add rules for "network-checker.ext" resource to "netchecker-server" ClusterRole

So that it could access the resource after it is created.

Corresponding issues:
https://github.com/Mirantis/k8s-netchecker-server/issues/125
https://github.com/kubernetes-sigs/kubespray/issues/3281

* Add kubelet config

* Change kubelet_authorization_mode_webhook to true

* Fix lint

* Sync env file

* Refactor the kubernetes node folder

* Remove deprecated flag and fix lint

* Minor cleanups

* Add comment in docs that nodelocaldns cache is enabled by default

* Disable kube_api_anonymous_auth by default to secure the setup

* Disable metrics-server in addons. Health endpoint is slow and unstable

* Fix anonymous-auth missing in configuration

* Cleanup a bit

* Fix kube anon auth

Fixes issue https://github.com/kubernetes-sigs/kubespray/issues/4695

According to [`debug` module documentation](https://docs.ansible.com/ansible/latest/modules/debug_module.html?highlight=msg), the correct parameter name is `msg`.

With the previous `message` parameter name I was getting FAILED messages while ansible was trying to debug previous FAILED tasks.

* Add support for http(s)_proxy to CoreOS and Fedora

* fix opensuse proxy support

* Fix CoreOS proxy support

* update documentation

This change ensures that etcd_extra_vars variable applies
to events etcd as well.

* Download to delegate and sync files when download_run_once

* Fail on error after saving container image

* Do not set changed status when downloaded container was up to date

* Only sync containers when they are actually required

Previously, non-required images (pull_required=false as
image existed on target host) were synced to the target
hosts. This failed as the image was not downloaded to
the download_delegate and hence was not available for
syncing.

* Sync containers when only missing on some hosts

* Consider images with multiple repo tags

* Enable kubeadm images pull/syncing with download_delegate

* Use kubeadm images list to pull/sync

'kubeadm config images pull' is replaced by collecting the images
list with 'kubeadm config images list' and using the commonly
used method of pull/syncing the images.

* Ensure containers are downloaded and synced for all hosts

* Fix download/syncing when download_delegate is a kubernetes host

Add etcd role dependency on kube user to avoid etcd role failure when running scale.yml with a fresh node. (#3240) (#4479)

Change-Id: I1588458b54c52443ad8d0afbd266f77ac0afea67

* Run dns_late preinstall tasks on all k8s nodes

Related issue: #4656

Change-Id: I63f8559ef1a497b7580ab084561e6603fe647834

* Fix ansible-lint

Change-Id: Ia5b33fa63dbc36d8c3e9557ef3f2ea02af2325a5

* Fix recover_control_plane lint issues

Change-Id: I16643a3193c11b6ba704e9698812cac7e4fd19a8

Close #4113