put a job into a 'waiting' status while it's locking machines
put a job into a 'waiting' status while it's locking machines

Signed-off-by: Andrew Schoen <1bb641dc23c3a93cce4eee683bcf4b2bea7903a3@redhat.com>

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