Because the various "webapp.*" users' home directories are under
`/srv/www`, the default SELinux context type is `httpd_sys_content_t`.
The SSH daemon is not allowed to read files with this label, so it
cannot load the contents of these users' `authorized_keys` files. To
address this, we have to explicitly set the SELinux type to
`ssh_home_t`.
The *websites/darkchestofwonders.us* role prepares a machine to host
http://darkchestofwonders.us/. The website itself is published via rsync
by Jenkins.