LU-6013 utils: improve comment re :/

Improve comment to identify the string ":/" as our
indication that the device refers to a lustre filesystem
and we are going to attempt mount as a client.

Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Change-Id: I1aed73687ac72edd692fcd9b248c112f94b4f6f3
LU-6013 util: add mount.lustre_osd to spec file

Add mount.lustre_osd to lustre spec file, so that it is included
in when lustre is packaged.

Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Change-Id: I975b9ce33e87204ddf8a361be8dbb42776eb3f47
LU-6013 utils: early options parsing to identify device

Use getopt_long to re-order argv[], and find the argv[]
entry identifying the device.  Use the results of that
to determine whether the user is attemping to start
lustre services or mount a lustre filesystem.

Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Change-Id: Ib4b40273b6c59ffb5772b3aedcfcdcf9e06ba307