Hint on how to join the slack channel README.md

Emphasis on docker recommended version

* add metallb as loadbalancer for on premise deployments

* improve configuration

* add variables to DaemonSet

Introducing credentials_dir variable in order to be able to override it

It wan't obvious for me how to join this channel.

Docker 18.06 for ubuntu versions before bionic

Document correct var kubeadm_enabled

Add azure-container-registry-config for Azure

OS_PROJECT_ID is obsolete in keystone v3 and jinja expression
doesn't set openstack_tenant_id as expected because of
undefined env var. Fixed the expression.

Required support to start working on windows node support

Split group-variables

Always run helm init to allow for settings changes

ingress-nginx: Upgrade to 0.19.0

Upstream Changes:

-   ingress-nginx 0.19.0 (https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.19.0)

Our Changes:

-   Sync templates with upstream changes

ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version

remove empty when line

ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version

force kubeadm upgrade due to failure without --force flag

ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version

added nodeSelector to have compatibility with hybrid cluster with win nodes, also fix for download with missing container type

fixes in syntax and LF for newline in files

fix on yamllint check

ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version

some cleanup for innecesary lines

remove conditions for nodeselector

cephfs-provisioner: Upgrade to v2.1.0-k8s1.11

coredns: Upgrade to v1.2.2

Upstream Changes:

-   cephfs-provisioner v2.1.0-k8s1.11 (https://github.com/kubernetes-incubator/external-storage/releases/tag/cephfs-provisioner-v2.1.0-k8s1.11)

Our Changes:

-   Sync clusterrole and role with upstream changes

Fix ports for kubeadm client and master configs for ha setups

Upstream Changes:

-   coredns v1.2.2 (https://github.com/coredns/coredns/releases/tag/v1.2.2)

NOTE:

-   coredns image for 1.2.0 and 1.2.1 had been removed from https://console.cloud.google.com/gcr/images/google-containers/GLOBAL/coredns

Fix docker_options definition to remove newlines

Fix target hosts generation when /etc/hosts does not contain 127.0.0.1 or ::1

Add documentation about having HA for etcd

etcd_events_access_address should be used for peer_url and client_url

Add support for etcd arm64