Docker proxy and k3s versions

• handle docker proxy, versus system wide proxy
• allow for specified k3s version to install

package proxies, optional system proxies, wipe disks

additions for Edge

• package proxies
• optional system proxies
• wipe disks in prep for SDS like rook

Add rancher and docker Ansible roles

Added Ansible roles for rancher and docker to install rancher on docker.

Basic ansible roles

Basic ansible roles for k3s_masters and k3s_workers