Merge topic 'test-RunCMake.GeneratorExpression' into release-3.18

6308bfb737 Tests: Factor out RunCMake.GenEx-GENEX_EVAL test
abe1c27499 Tests: Factor out RunCMake.GenEx-TARGET_FILE test
fbead761fe Tests: Factor out RunCMake.GenEx-DEVICE_LINK test
64a8587332 Tests: Factor out RunCMake.GenEx-HOST_LINK test
6f224a065c Tests: Factor out RunCMake.GenEx-LINK_LANG_AND_ID test
f3f6317ca3 Tests: Factor out RunCMake.GenEx-LINK_LANGUAGE test
983adb8bed Tests: Factor out RunCMake.GenEx-COMPILE_LANG_AND_ID test
931a6702f6 Tests: Factor out RunCMake.GenEx-COMPILE_LANGUAGE test

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4899