While it's still possible to build against the old library and
runtime, KF5Wallet is the default.
Change-Id: I49cb232d3d5a69388b09e8aa7d1351e4d19721db
Reviewed-on: https://galileo.mailstation.de/gerrit/10563
Reviewed-by: Jenkins <wk@mailstation.de>
Reviewed-by: Julian Ospald <hasufell@posteo.de>
