Description of problem:


Version-Release number of selected component (if applicable):
fcitx-qt5-1.1.1-1.fc27.x86_64

How reproducible:
Every time. 

Steps to Reproduce:
1.`sudo dnf upgrade` on a F27 with KDE and fcitx to reproduce
2.fcitx-qt5 will refuse to install citing conflict: citing ``sudo dnf upgrade` on a F27 with KDE and fcitx to reproduce`
3.kcm-fcitx-0.5.5-1.fc27.x86_64 faces a similar problem with `cannot install both qt5-qtbase-5.9.4-1.fc27.x86_64 and qt5-qtbase-5.9.1-9.fc27.x86_64`

Actual results:
qt5 cannot be upgraded to 5.9.4, so neither can all the KDE packages that depend on it. In case of forcing upgrade using --allowerasing, fcitx will be removed, disabling Chinese input. 

Expected results:
fcitx-qt5 should have its dependency updated to allow qt 5.9.4, and so should kcm-fcitx.

Additional info: