Ensure generic-updates plugin runs after packagekit-refine

9eab0108 made generic-updates check the 'scope' and 'kind' for a package update before adding it to the generic 'OS Updates' "app" which is used to display updates for packages that aren't appdata-ified. The 'scope' and 'kind' for package updates are set by packagekit-refine...but that change did not ensure that generic-updates runs after packagekit-refine. This can result in gnome-software failing to 'see' these generic updates on a first update scan, and only picking them up on a retry. To fix this, we should ensure that packagekit-refine runs before generic-updates.

https://bugzilla.redhat.com/show_bug.cgi?id=1638563

Signed-off-by: Adam Williamson awilliam@redhat.com