Make unit tests not depend on random hash seed

This commit fixes the places in the tempest unit tests which were
dependent on the python hashseed being 0. They were mostly issues of
expectations, either explicit or inadvertently implicit, on dict or
list ordering.

Change-Id: Iab72ed4d52765de744804e6202ee4bf0664988c5
Merge "Make unit tests not depend on random hash seed"