Fix kubespary rpm spec file some requires

Added support for kubelet webhook authentication/authorization

README.md update for default component versions

Integrate kubernetes/ingress-nginx 0.10.2 to Kubespray

Fixes #2397

remove + groups['calico-rr']

Delete unused fedora docker repo

Correct use of deprecated argument to TF/OpenStack module

Enable OOM killing

gather facts for all nodes, even if running for single one (--limit)

Upgrade Local Volume Provisioner Addon to v2.0.0

Add etcd-events cluster for kube-apiserver

fix apiserver manifest when disabling insecure_port

Install latest version of Helm

Add pre-upgrade task for moving credentials file

Bump dashboard from 1.8.1 to 1.8.3 because of reload bug

default kube_proxy_mode in kubernetes-defaults

Use CNI to assign kube_pods_subnet for calico

Adding this into the default example inventory so it has less of a chance of biting others after weeks of random failures (as etcd does not  express that it has run out of RAM it just stalls).. 512MB was not  enough for us to run one of our products.

For etcdctl commands, use admin cert instead of node because this file
doesn't exist on etcd only hosts.

Remove redundant spaces

* Fix run kubectl error

Fix run kubectl error when first master doesn't work

* if access_ip is define use first_kube_master
else different master use a different ip

* Delete set first_kube_master and use kube_apiserver_access_address

Upgrade to Kubernetes v1.9.3

Fix link markdown markup