Remove configuration variable kubeadm_control_plane

* kube-proxy never gets deployed so need to remove it

* Rotate kubelet server certificate.

* CI test kubelet server cert rotation

* Approve kubelet serving certificates in tests.

* Use proper openssl command to differentiate between host and ip in current certificate check

* fixup! Use proper openssl command to differentiate between host and ip in current certificate check

https://github.com/kubernetes/kubeadm/issues/1498 was closed

* add audit webhook support

* use generic name auditsink

Co-authored-by: Hans Feldt <hafe@users.noreply.github.com>

* Add event-ttl duration

* Fix wrong location

* ADD tls cipher suites support

yaml lint

yamllint

* update test case

* update test case

Co-authored-by: Hans Feldt <hafe@users.noreply.github.com>

* etcd: etcd-events doesn't depend on etcd_cluster_setup

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: remove condition already present on include_tasks

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: fix scaling up

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: use *access_addresses, do not delegate to etcd[0]

We want to wait for the full cluster to be healthy,
so use all the cluster addresses
Also we should be able to run the playbook when etcd[0] is down
(not tested), so do not delegate to etcd[0]

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: use failed_when for health check

unhealthy cluster is expected on first run, so use failed_when
instead of ignore_errors to remove scary red messages

Also use run_once

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* kubernetes/preinstall: ensure ansible_fqdn is up to date after changing /etc/hosts

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* kubernetes/master: regenerate apiserver cert if needed

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

- This solves issue #5721 & #5713 (dupes)
  - Provide a cleaner default usage pattern for the download role
    around etcd that supports 'host' and 'docker' properly
  - Extract the 'etcdctl' as a separate task install piece and reuse it where
    appropriate
  - Update the kubeadm-etcd task to reflect the above change

* Run 'container-engine' after drain.

Move possibly disruptive role 'container-engine' to run after the node
is drained.

As that role have to be run on non-cluster nodes as well (etcd and
calico-rr), and those nodes are not drained, add play for that case.

* Check if api is up before upgrade.

If container engine is restarted in previous role, api controller can
take some time to start. This check ensures api is up before upgrade.

* External OpenStack Cloud Controller Manager implementation

* Adding controller image tag

* Minor fixes

* Restructuring the external cloud controller to work with KubeADM

Resolves issue where kubectl cache of <v1.16 api schema
interferes with interacting with daemonsets and deployments.

Change-Id: I63b7046958f2008eb144b6da0004c598f945e0ae