removed os.environ from test_flow
gns.d/gns.conf renamed to gns.d/logging.conf, verbosity increased
added Dockerfiles for services
Dockerfile: build nikicat/gns from nikicat/ubuntu-pypy3:12.04
added makefile to rebuild docker images
makefile: added targets to start/clean docker containers
Dockerfile: reverted previous commit
fetcher Dockerfile: do not fetch rules on build
fetcher dockerfile: fixed git repo initialization
Merge pull request #57 from nikicat/master

Dockerfiles added