Introduce an experiment validation build

[russmiles]

I would like us to consider adding a chaos validate build to this repo. This is where each experiment is run through chaos validate, with corresponding dummy env variables where necessary, and where the official docker image of Chaos Toolkit is employed.

This would show:

• How the chaos toolkit can be executed from a build system, perhaps Travis.
• How chaos validate is especially useful when building catalogs of experiments in an organisation.

Does this sound like a good idea?

[Lawouach]

Agreed. This could be setup using travis indeed.