Create an environment or docker container with RabbitMQ server

[Oleksiivanov]

What should we do?

Create more comfortable testing for RabbitMQ and prepare conditions for other connectors with the required installed server.

Why should we do it?

For testing RabbitMq Connector (#15) QA needs log in with their own account at https://www.cloudamqp.com/ and create rabbitMQ server instance.
In this case, all testing data is available only for one QA engineer.
What can we do?
We can use one account and one rabbitMQ server for QA teams and for Connector teams,
OR we can create a docker container in camunda remote server with RabbitMq server and with already installed testing data in this server, and start it when needed.
We can use the case with docker and for other connectors, and all QA teams, Connector teams, and others will know all test credentials and will be able to start RabbitMq server in one-two click and to do regression testing and just testing for needed Connector more quickly.

[Oleksiivanov]

Copy of https://github.com/camunda/team-connectors/issues/223