Updates to workarounds, tempest

Change-Id: I7768123206840b088b80c3f279e0ec88bc40a205
tempest: w/ testr you have to remove .testrepository before rerun
tempest: tests are passing w/ nosetest where they fail with testr. switching to nose

Change-Id: I756d1f03d62e476966eb9ea8c50c792d81ad1b3e