Fix for 9871 was wrong: original <= should always have been <
Fix for 9871 was wrong: original <= should always have been <

...but now it matters.  lock_list returns exactly the length needed,
and so the 'failure' case is strict less-than.

Suggested-by: Sandon VanNess <d1946cc1b0d8a6e04fff5034c195402a3c038a3e@redhat.com>
Signed-off-by: Dan Mick <b07550071eaa6a9296289c43bbd6c90559196431@redhat.com>

caibo2014/teuthology,dmick/teuthology,robbat2/teuthology,dreamhost/teuthology,tchaikov/teuthology,zhouyuan/teuthology,michaelsevilla/teuthology,ivotron/teuthology,SUSE/teuthology,tchaikov/teuthology,ceph/teuthology,caibo2014/teuthology,michaelsevilla/teuthology,SUSE/teuthology,robbat2/teuthology,ktdreyer/teuthology,SUSE/teuthology,ktdreyer/teuthology,dreamhost/teuthology,dmick/teuthology,t-miyamae/teuthology,ivotron/teuthology,t-miyamae/teuthology,yghannam/teuthology,ceph/teuthology,zhouyuan/teuthology,yghannam/teuthology,dmick/teuthology