* Fix jinja2 boolean condition

* Convert all felix variable to booleans instead.

This commit adapts the "Lay Down KubeDNS Template" task to use the static
files moved by pull request [1]

[1] https://github.com/kubernetes-sigs/kubespray/pull/4341

* Fix bootsrap-os role, failing to create remote_tmp

* use ansible_remote_tmp hostvar

values from inventory in roles/kubespray-defaults/defaults/main.yml
hardcoded values in roles/container-engine/defaults/main.yml

dns_servers set empty in roles/container-engine/defaults/main.yml and skydns_server not set in docker_dns_servers variables
also set default value for manual_dns_serve

another variables in roles/container-engine/defaults not need to set

* Added configurable local apiserver proxy liveness probe

* Enable API LB healthcheck by default

* Fix template spacing and moved healthz location to nginx http section

* Fix healthcheck listen address to allow kubelet request healthcheck

This reverts commit ea7a6f1c.

This change modified the certs dir for Kubernetes, but did not move the directories for existing clusters.

Pods on down/unresponsive nodes can't be deleted without
--force --grace-period=0.

Fixes #4314

* Move most coredns templates to static files

This should speed up the task slightly

* yaml lint fixes

* add blockSize to IPPool spec for Calico >= v3.3.0

* fix "cidr" spec in Calico IPPool resource for my PR

* Remove hard dependence on facts for all nodes

* Update main.yaml

* Update main.yaml

* Add 1.12.6, sort arm64 descending

* remove 1.10.x checksums (EOL anyways)

* feat(external-provisioner/local-path-provisioner): adds support for local path provisioner

Helpful for local development but also in production workloads (once the
permission model is worked out) where you have redundancy built into the
software uses the PVCs (e.g. database cluster with synchronous
replication)

* feat(local-path-provisioner): adds debug flag, image tag group var

* fix(local-path-provisioner): moves image repo/tag to download role

* test(gce_centos7-flannel): enables local-path-provisioner in test case

* fix(addons): add image repo/tag to commented default values

* fix(local-path-provisioner): typo in jinja template for local path provisioner

* style(local-path-provisioner): debug flag condition re-formatted

* fix(local-path-provisioner): adds missing default value for debug flag

* fix(local-path-provisioner): syntax fix for debug if condition end

* fix(local-path-provisioner): jinja template syntax: if condition white space

* 30MiB for gpu-device-plugin

* use vars for easier configuration

Upstream Changes:

  - weave 2.5.1 (https://github.com/weaveworks/weave/releases/tag/v2.5.1)

Our Changes:

  - Sync templates with upstream changes

* fact gathering should run only once per node
* eliminate ansible version check, it is at the beginning of each
  playbook

The lastest version of ubuntu-nvidia-driver-installer contains a fix for
https://github.com/GoogleCloudPlatform/container-engine-accelerators/issues/90
which causes the installer pod to crash when driver is already loaded.

This was already approved in #4106 but there are CI issues
with that PR due to references to kubernetes incubator.

After upgrading to Kubespray 2.8.1 with Kubeadm enabled Rook
Ceph volume provision failed due to the flexvolume plugin dir not
being correct. Adding the var fixed the issue

because of etc-kubernetes-manifests not empty.

* Adding ability to maintain existing Encryption Secrets at Rest.

If secrets_encryption.yaml is present it will not be overriten with a new kube_encrypt_token.

This should allow for it to be set ahead of a playbook running or maintain it if cluster.yml is ran on the same cluster and the ansible host does not have access to the secrets.

* Setting existing kube_encrypt_token across all master nodes in case it was missing in one or more nodes.