Fix recently added test to work on Unix.  Clean up syntax, call clear_cached_tar at the right times so that we don't mess up the rest of the test suite.
Fix recently added test to work on Unix.  Clean up syntax, call
clear_cached_tar at the right times so that we don't mess up the rest of
the test suite.


jaeheung90/tpkg-client,tpkg/pkgs,tpkg/client,tpkg/server,jaeheung90/tpkg-client,tpkg/client,tpkg/client,tpkg/server,tpkg/server,tpkg/pkgs,jaeheung90/tpkg-client,tpkg/pkgs