nose has not seen active development for many years now. With py310, we
can no longer use it due to import errors.
Also update lower contraints
Closes-Bug: #1993531
Change-Id: I215ba0d4654c9c637c3b97953d8659ac80892db8
Now that OpenStack writ large has dropped support for py36,
we're going to have to manage our constraints ourselves
more, just like we did for py27.
Change-Id: I0973be6692e3a9b871eb61cbf759e13644a25107