Add missing summaries

Summary: Fixes https://build.kde.org/job/plasma-workspace%20Plasma-5.9%20stable-kf5-qt5/PLATFORM=Linux,compiler=gcc/lastCompletedBuild/testReport/(root)/TestSuite/appstreamtest/

Reviewers: #plasma, mak

Reviewed By: mak

Subscribers: mak, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D4447