Currently, the devserver role offers an unit "userland-home" to provision
dotfiles. It's not really convenient when we login to another server,
without any shell configuration.
For a better ops experience, this change offers two layers:
- core/userland-home: provisioned to *every* server
- devserver/userland-home: extra files for devserver role
In both cases, files are only propagated if the user has access to
that machine, through a node > forests > groups resolution.
Provisioning dotfiles for dereckson account.
Consolidating tmux configurations.