[Merge] ~paelzer/ubuntu-seeds/+git/ubuntu:prepare-to-drop-server-ship into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:groovy

[Christian Ehrhardt ]

FYI: I've now also added the dropping of server-ship which has the prereq of https://code.launchpad.net/~paelzer/ubuntu-seeds/+git/platform/+merge/389947 being landed before we merge this.

So please review, but don't merge it without coordination
-- 
https://code.launchpad.net/~paelzer/ubuntu-seeds/+git/ubuntu/+merge/389946
Your team Ubuntu Core Development Team is subscribed to branch ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:groovy.