* Adding in a new go-agent to use for marketing pipelines. Contains necessary modules to make requirements in edx-mktg

* Setting up the go-agent with a name and resources so it will autoregister with these.

* Leaving php and drush is goagent so we can fall back. Making docs more clear

* Build go-agent-marketing based on tagged image of go-agent

* Attempting to fix build

* Trying latest

* Adding the acquia github key directly into the goagent (#4264)

* Adding the acquia github key directly into the goagent

* Moving the acquia key to the marketing agent

A demo site and configuration are now created for credentials sandboxes. This allows developers to provision a sandbox with no additional manual effort.

LEARNER-816

- This removes the duplication across the various IDA configurations
- Updated Dockerfile for Docker-based devstack

LEARNER-816

LEARNER-1473

- This removes the duplication across the various IDA configurations
- Updated Dockerfile for Docker-based devstack

LEARNER-818

most of the docker work is being driven out of
https://github.com/edx/devstack for developer use.  In the future,
some work may come back to this repo, but for now this is just a trap.

PLAT-1573

This file serves as a location to store variables common to the services in Docker Devstack. It currently contains the variables for the LMS root URLs and OAuth/OpenID Connect configuration.

PLAT-1573

All services should use common_vars, so there is no need for an override.

LEARNER-817

- This removes the duplication across the various IDA configurations
- Updated Dockerfile for Docker-based devstack

LEARNER-817

We're stopping rabbit, but it's part of the configuration the service,
so I didn't use manage:.  We may need to re-discuss the tags (mongo_3_0
works similarly when stopping mongo to manage config).

Files for building a docker container for rabbitmq

All apt-get over https

New third-party repos

Enforce correct rabbit version installed

Flag rabbit upgrading

Adds the CHECK_RABBIT_VERSION flag (true by default). If true and the
rabbitmq version found differs from the version specified in
RABBITMQ_VERSION, the role fails. If false in the same scenario, the
role continues but does not install rabbitmq (because it's already
installed).

This enables us to continue using this role without forcing us to
upgrade rabbitmq.

Rebase miss

Missed merge conflict marker

syntax and whitespace

latest rabbit.