Newer versions of the BURP client require `status_port` to be set. This
commit updates the `burp.conf.j2` template to more closely match the
default configuration shipped with the *burp* package, including setting
this new value.
The *burp-client* role installs and configures a BURP client. It should
support RHEL/CentOS/Fedora and Gentoo.
To manage the client password and other server-mandated configuration,
the role uses Ansible's delegation feature to generate a configuration
file in the "clientconfdir" on the BURP server.
An hourly cron task is scheduled that runs `burp -a t` every hour. This
allows the server to configure backup timebands and intervals.
Dustin