Support for environnement variables introspection

[daniellavoie]

Hi,

Here is a feature request that would make this connector cloud foundry friendly. The rabbitmqconnector.proxies.RMQConfiguration.RMQConfiguration(IContext, IMendixObject) constructor could be extended to lookup properties among the environnement variable in case the MendixObject is not provided.

With such feature, configuration wouldn't have to be stored in the databse as a Mendix object.

I will try to work on a prototype.