nuke: blow away /home/ubuntu/cephtest too
nuke: blow away /home/ubuntu/cephtest too

(along with /tmp/cephtest)

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@inktank.com>

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