WIP:  Added initial Dockerfiles for batfish client and server

Work in progress until I get access to LogicBlox.  Putting up pull request for visibility.

Adding two Dockerfiles for batfish client and server.  The batfish client should work by passing -e flag to docker commands but I won't be able to test it until I finish the server (needs LogicBlox).

Once we figure out last comment, we should be able to pass this command on docker command line so it is a single line to launch server.