daemon/config: use initialized config in more tests
daemon/config: use initialized config in more tests

Makes sure that tests use a config struct that's more representative
to how it's used in the code.

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

moul/docker,cpuguy83/docker,moul/docker,moby/moby,Mokolea/docker,Mokolea/docker,thaJeztah/docker,Mokolea/docker,konstruktoid/docker-upstream,jimjag/docker,moul/docker,jimjag/docker,moul/docker,trebonian/docker,Ramzec/docker,thaJeztah/docker,konstruktoid/docker-upstream,cpuguy83/docker,Ramzec/docker,mahak/docker,trebonian/docker,cpuguy83/docker,jimjag/docker,konstruktoid/docker-upstream,Mokolea/docker,moby/moby,mahak/docker,jimjag/docker,mahak/docker,thaJeztah/docker,cpuguy83/docker,moby/moby,trebonian/docker,trebonian/docker,thaJeztah/docker,Ramzec/docker,konstruktoid/docker-upstream,moby/moby,Ramzec/docker,mahak/docker