workunit: include python2.7 path too
workunit: include python2.7 path too

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