kernel: reboot immediately after installing
kernel: reboot immediately after installing

This hides the latency of rebooting when installing on many machines.

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