LU-9439 scripts: Provide a sample lnet.conf file

LU-9439 scripts: Provide a sample lnet.conf file

Create a sample lnet.conf file that is packaged and
installed.

Move /etc/sysconfig/lnet.conf to /etc/lnet.conf. Configuration
files should not be in /etc/sysconfig.

Cleaned up the init.d lnet script.

Test-Parameters: trivial
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Change-Id: Ie94d0c2680c0f1fd65cbf2e33b08194beee5d8be
Reviewed-on: https://review.whamcloud.com/26971
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Amir Shehata <amir.shehata@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>