Adding uuidfile for rkt based vault to properly cleanup after itself

No need to install rkt on CoreOS

Make Calico nodename overridable on bare metal

Update efk stack

allow for configurable openstack storage class

Add run_once to remove-node

Fix the Python and pip version flag in the README

Add manage swap on the worker node

Update kube-scheduler policy

Fixed "network_plugin" variable

Enable by default the kubelet token auth

Improve variable handling for disabling etcd events cluster

The README says to check if Python and pip are installed type:

```
python -v && pip -v
```

Lowercase `-v` is `--verbose`, uppercase `-V` is `--version`. The
command should be:

```
python -V && pip -V
```

* Limit the maximum number of revisions saved per helm release

Fix inconsistent variables in task name and task message

CoreDNS uses cluster_name instead of dns_domain

parametrized iptables options for docker daemon

Add vm_name option to vsphere cloud provider config

cert-manager: Upgrade to v0.3.0

Fixup #2545, cephfs-provisioner: Individual Namespace for Add-on

ingress-nginx: Upgrade to 0.15.0

Reconfigure kube-proxy to access kube-apiserver via the LB(kubeadm)

docs(azure arm): update link azure cli login

Fix nginx-proxy HA when kubeadm enable

Upgrade Kubernetes to 10.0.4 and etcd to 3.2.18