kernel: install in parallel
kernel: install in parallel

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