Make parent directories as needed
Make parent directories as needed

with '-p' when mkdir

Signed-off-by: Yuan Zhou <3e1bd055fa207f12fc3582148e18abe89a6d5a29@intel.com>

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