Provision dotfiles and bin commands for dereckson on devserver role
The devserver role has now a userland-home unit to host dotfiles
and other files to deploy to home directory. This is useful to
avoid to manually have to reconfigure home directory on each server.
Test Plan: Tested on Ysul
Reviewed By: dereckson
Differential Revision: https://devcentral.nasqueron.org/D1402