Basically a bunch of staged stuff of before the upgrade of
buildroot and mycroft. If I remember it all correctly;
- Change the folder permissions setup from device_table to
systemd.
- Remove the mycroft user setup from the mycroft.service
package into a systemwide buildroot user_table.txt
- Fix respeaker stuff for systemd system
- Fix sudo system for the mycroft user
- Allow mycroft to SSH into the system. Disallow root login.
- Probably some other fixes and tweaks I forgot about....
