D9017: Avoid run kfileplacesmodeltest and kfileplacesviewtest in parallel

[David Faure]

dfaure accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R241 KIO

BRANCH
  serialize-unit-test

REVISION DETAIL
  https://phabricator.kde.org/D9017

To: renatoo, dfaure
Cc: #frameworks