* Add kube dashboard, enabled by default

Also add rbac role for kube user

* Update main.yml

* Clean up debug in check apiserver test

* Change password generation for kube_user

Special characters are not allowed in known_users.csv file

Removed unnecessary root user

Change kubelet deploy mode to host
Enable cri and qos per cgroup for kubelet
Update CoreOS images
Add upgrade hook for switching from kubelet deployment from docker to host.
Bump machine type for ubuntu-rkt-sep

Closes #1228
pods is default enforcement

see https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/
add

update

* Enable weave seed mode for kubespray

* fix task Weave seed | Set peers if existing peers

* fix mac address variabilisation

* fix default values

* fix include seed condition

* change weave var to default values

* fix Set peers if existing peers

By default Calico CNI does not create any network access policies
or profiles if 'policy' is enabled in CNI config. And without any
policies/profiles network access to/from PODs is blocked.

K8s related policies are created by calico-policy-controller in
such case. So we need to start it as soon as possible, before any
real workloads.

This patch also fixes kube-api port in calico-policy-controller
yaml template.

Closes #1132

Closes: #1135
Closes: #1026
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

It is now possible to deactivate selected authentication methods
(basic auth, token auth) inside the cluster by adding
removing the required arguments to the Kube API Server and generating
the secrets accordingly.

The x509 authentification is currently not optional because disabling it
would affect the kubectl clients deployed on the master nodes.

To use OpenID Connect Authentication beside deploying an OpenID Connect
Identity Provider it is necesarry to pass additional arguments to the Kube API Server.
These required arguments were added to the kube apiserver manifest.

Operator can specify any port for kube-api (6443 default) This helps in
case where some pods such as Ingress require 443 exclusively.

Closes: 820
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

Closes: #1073
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

* Leave all.yml to keep only optional vars
* Store groups' specific vars by existing group names
* Fix optional vars casted as mandatory (add default())
* Fix missing defaults for an optional IP var
* Relink group_vars for terraform to reflect changes

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>