kernel: ignore connection problems while waiting for reboot
kernel: ignore connection problems while waiting for reboot

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