This is a fix for #4124

* 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

Long option --become was used in the example but in the comment describing it the short option -b was used.
Use same option in description and example to avoid confusion.

Fix comment style

* 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

* updated ansible pinning to prevent more possibilities of breaking changes

* more exact pinning of ansible version

* more exact pinning of ansible version and also all the rest

* added testing requirements.txt pinning settings

* removed boto from testing requirements.txt

- 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 wait for floating ip associate with instance

* Terraform formatting fix

* Sort Open Telekom Cloud in compatible list

* 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