systemd: add scripts for running the aiaiai processes

systemd: add scripts for running the aiaiai processes

This patch adds 3 service files for use with aiaiai

1) aiaiai.service which runs the aiaiai email dispatcher
2) aiaiai-project-update.service which runs aiaiai-project-update which
   will update remotes for all projects in the configuration file
3) send-mail-on-failure for notifying an administrator of service errors

The services are primarily useful for tracking aiaiai output as well as
keeping remotes that aiaiai needs up to date.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>