EL6 is no longer supported, remove OS-specific test skip
EL6 is no longer supported, remove OS-specific test skip

matyasselmeci/htcondor-ce,brianhlin/htcondor-ce,brianhlin/htcondor-ce,matyasselmeci/htcondor-ce,brianhlin/htcondor-ce,matyasselmeci/htcondor-ce