sos: Patch to add sanlock.log in sos.

Currently the sanlock.log is missing from vdsm plugin of sos.
This adds missing sanlock log to troubleshoot sanlock issues.

Bug-Url:https://bugzilla.redhat.com/attachment.cgi?id=774659
Change-Id: Ibd2fe3d3cc447dc621f122d86a1a9b50f0aa6a4d
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/17001
Reviewed-by: Timothy Asir <tjeyasin@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>