D11129: Mark kpackage_install_package undeprecated for plasma_install_package

[Marco Martin]

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

REPOSITORY
  R290 KPackage

BRANCH
  allowdeprecatedwarningdisabling

REVISION DETAIL
  https://phabricator.kde.org/D11129

To: kossebau, mart, apol
Cc: #frameworks, michaelh