This commit initializes the needed services which are not mocked
so tests can be executed in any environment with docker.

Some default modifications (i.e: connection strings) were also made to
current tests to accomodate them for this setup.

A docker-compose.yml file is provided with all the necessary parameters
for this services to be initialized. Future services can be added
easily by extending this configuration file

In addition a makefile has been introduced to simplify command execution

provided services

Update test users to use circleci default services

I've tried to set-up circleci but I came across a Golang issue that was
preventing CPU tests to PASS. Instead of ignoring those tests I've
submitted an issue to Go (golang/go#11609)
hoping that this gets fixed soon.

This allows to run tests in environments where DOCKER_HOST is used. This
is extremely helpful when using boot2docker to run docker