- Creates and defaults an ansible variable for every configuration option in the `kubeproxy.config.k8s.io/v1alpha1` type spec
  - Fixes vars that were orphaned by removing non-kubeadm
  - Fixes previously harcoded kubeadm values
- Introduces a `main` directory for role default files per component (requires ansible 2.6.0+)
  - Split out just `kube-proxy.yml` in this first effort
- Removes the kube-proxy server field patch task

We should continue to pull out other components from `main.yml` into their own defaults files as I did here for `defaults/main/kube-proxy.yml`. I hope for and will need others to join me in this refactoring across the project until each component config template has a matching role defaults file, with shared defaults in `kubespray-defaults` or `downloads`

* Update the version of pypy used on CoreOS bootstrap-os

* update the pip installation process on CoreOS

* Add scale master features

* Add certificate management with kubeadm

* Add kubeadm kubeconfig

* Fix ymalroles error

* fix upgrade cluster fialed

* force update cert and keys when you reconfigure cluster

The containerd service and socket files have been dropped from the
openSUSE docker package so we should not require them in the docker
service anymore. This makes the docker service file look similar to
the one shipped by the openSUSE package.

Signed-off-by: Markos Chandras <mchandras@suse.de>

Add support install python-pip from local yum repository if local yum repository exist.

Webhook token auth:
https://kubernetes.io/docs/reference/access-authn-authz/authentication/#webhook-token-authentication

Fixes #3063.

* controlPlaneEndpoint set up through load balancer should be possible  even in single master setups

Enable load balancer for single-master setups
Fixes an issue where single-master setups are not reachable using the usual admin.conf from outside the cluster. 

controlPlaneEndpoint set up through load balancer should be possible  even in single master setups

* add fix to other api versions

* remove obsolete check completely

* remove check, pass 2

* removes checks in client configuration

* delete 'and'

download v1.12.3 kubernetes images failed

it is used for join master or use --experimental-control-plane argments

- NOTE: it assumes that the 'latest' version is newer than 17.05

* Add images downloader to download roles

* Use single jinja2 templates

* add kube_version to templates

Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>

* add vars for cilium init container

* make yamllint happy

* add var cilium_init in downloads

Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>

* Metrics server resizer addon should target metrics server deployment

* Target metrics server deployment without version

Adding fact is_atomic in bootstrap-centos.yml.

Fix issue: #3538

* Add support for running a nodelocal dns cache

After encountering dns issues in a cluster I was recently working on I
noticed Kubernetes 1.13 introduced support for running a nodelocal dns
cache.

I believe this can usefull for more people.

https://github.com/kubernetes/kubernetes/commit/73b548db06c5e293533344c5b6171e955eac9ff1
https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/0030-nodelocal-dns-cache.md

* Add requested changes

* Add additional requested changes + documentation

* Add requested changes after review

* Replace incorrect variable

Metrics port is exposed through a service for CoreDNS but not for kube-dns.

Setting host_architecture to allow etcd upgrade working through: ansible-playbook -b -i inventory/sample/hosts.ini cluster.yml --tags=etcd (on other case host_architecture is missing)