changed paths to dcsillag
Make calls to go via environment variable in Makefile

So easier to run make test when multiple go installations
Add ability to specify alternate LXC config template file.

Does not "stick" in images.

Either:
  * to the server as a whole with the -T option with docker -d
  * on a specific run with the -T option to docker run
  * during container build with DockerLxcTemplate in the
    directory along side Dockerfile