Make install.upgrade work with CentOS/RHEL/Fedora.
Make install.upgrade work with CentOS/RHEL/Fedora.

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