Add rootless docs

Add initial docs on how to deploy metrics-server

Check for cgroup pids support

If cgroup pids are not supported add a feature-gates flag
SupportPodPidsLimit=false for kubelet.

Add --cluster-domain option

Use the latest apiVersion in k8s-v1.14.x

Allow flannel interface to be specified on the command line

Fix usage of bind address flag

Extend systemd start timeout for slow systems

Cert generation may cause slow startup times for some systems such as
the Raspberry Pi, set the systemd service TimeoutStartSec to Infinity to
avoid startup timeouts.

Signed-off-by: William Zhang <zhang.wanmin@zte.com.cn>

Configure aggregation layer for metrics

Create initial recipes directory with metrics-server modified for
deployment in current k3s configuration.

Configure kube-apiserver, kubelets, and kube-proxy for use with
aggregation layer in order for metrics-server deployment to function
correctly.

rootless

Add extra flags for server and agent components

k8s 1.14

Add bind address server config

Change address to bind-address for scheduler and controller-manager

update docker image to new version v0.3.0

Update README for hostname req

Add information on /etc/hosts hostname requirement.

For rancher/k3s/issues/138

Signed-off-by: Thorsten Schifferdecker <schifferdecker@b1-systems.de>