LU-12298 init: Add init info to lustre sysvinit script

LU-12298 init: Add init info to lustre sysvinit script

This adds info to sysvinit script that systemd can use
to build dependency graphs.

Signed-off-by: Nathaniel Clark <nclark@whamcloud.com>
Change-Id: Ied3bc05d61ba9dc33904a84c5f91bb9adc60cb01
Reviewed-on: https://review.whamcloud.com/34873
Tested-by: Jenkins
Reviewed-by: Gu Zheng <gzheng@ddn.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>