DM-34155: Expect fully-qualified task names in TaskDef.

[TallJimbo]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[TallJimbo]

I'm quite confident the CI failure here is due to running against pipe_base main, so it'll automatically get resolved when that merges, clearing up this to be merged right afterwards.

[codecov]

Codecov Report

Merging #176 (6f29738) into main (109a262) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #176   +/-   ##
=======================================
  Coverage   82.55%   82.55%           
=======================================
  Files          47       47           
  Lines        3628     3628           
  Branches      588      588           
=======================================
  Hits         2995     2995           
  Misses        465      465           
  Partials      168      168           

Impacted Files	Coverage Δ
tests/test_cliScript.py	95.77% <ø> (ø)

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