Change homeassistant from deprecated supervisor install

[lanefu]

The supervisor style install of hass is intead for hass maintained appliance images and will be deprecated in the future.

Change install to use standard container image here: https://hub.docker.com/r/homeassistant/home-assistant

Recommendations:

• Drive container by systemd unit file
• use release tag instead of latest. Set via /etc/default or /etc/homeassistant folder
• give user choice of container or host networking durring install
• map /etc/homeassistant/config to /config