bacula: Correction to 9.6.5

bacula: Correction to 9.6.5

- Corrected Download URL to remove filename from the end of it. This is defined separately.
- Corrected to include install command for backup file which was missed in previous patch.
- Added backup file to rootfiles list.
Signed-off-by: Adolf Belka<ahb.ipfire@gmail.com>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>