setup.py: unstick docker-py and requests dependencies
setup.py: unstick docker-py and requests dependencies

docker-py 1.10.6 is the last version released under docker-py, after that it
will be just docker, but has breaking changes, see:
https://github.com/docker/docker-py/releases/tag/2.0.0

Update the list of allowed versions of requests to docker-py master.

fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,f-droid/fdroidserver