Merge topic 'no-stringly-typed-variables'

5497eba1a0 CTestUpdate: Prefer concrete variables over map entries
8cac63814c CTestSubmit: Prefer concrete variables over map entries

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !9935