stestr 3.2.1

This is a patch version release that contains a bugfix for the detection
and reporting of instances where a test worker exits without reporting a
test's final status. This is critical for debugging situations where
there is a segfault or other system error in a test.

Fixes

• Fixed the detection of test worker failures before reporting final
  result status (resulting in a test showing a status of "inprogress").
  This enables reporting any tests that were running when the test
  worker exited.