At https://bugs.kde.org/show_bug.cgi?id=402334 it has been reported that umbrello from binary factory needs an installed dbus. On opensuse distro the related packages are

$ rpm -q -f /bin/dbus-daemon
dbus-1-1.8.22-10.1.x86_64

It also would be nice to have qdbus and qdbusviewer to give end user a simple way to use dbus support

$ rpm -q -f /usr/bin/qdbus-qt5 
libqt5-qdbus-5.11.2-1.13.x86_64
$ rpm -q -f /usr/bin/qdbusviewer-qt5 
libqt5-qttools-5.11.2-1.13.x86_64

From looking into the craft-blue-prints dbus daemon looks to be libs/dbus, but I cannot find a related qdbus(viewer) package.