nuke: synchronize clocks after reboot, and optionally synchronize all clocks
nuke: synchronize clocks after reboot, and optionally synchronize all clocks

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