D3556: run-tests: update the test case name format

[lothiraldan (Boris Feld)]

lothiraldan added a comment.


  I fixed the issue, it was a last minute style fix that turns out to not be equivalent to the previous code.
  
  Anyway, here is the updated version that was rebased on top of hg-commited.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3556

To: lothiraldan, #hg-reviewers, quark, pulkit
Cc: quark, mercurial-devel