bacula: Update to use IPFire initscript

bacula: Update to use IPFire initscript

Bacula install used the bacula initscript for starting and stopping bacula.
This works fine but results in no pid or memory input in the addons table
under services.
Using the IPFire initscript also successfully starts and stops bacula with
no problems but also provides the pid and memory information in the services
addons table.
- rootfiles adjusted to remove the reference to bacula-ctl-fd
- lfs/bacula adjusted to remove the init.d/bacula link generation
             remove the "rm -f /root/.rnd" command. This file is not present
             and I have not seen this command in any other lfs file that I
             have looked at.
- new bacula initscript created

Signed-off-by: Adolf Belka <ahb.ipfire@gmail.com>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>