FEATURE: add a --output option for package create
In order to avoid clash between packages from same repo but by vaarious user. We decided to add the name of the user to the folder holding the package.
Unfortunately KuFAIR has no information about the user. Therefore the latter should be responsible to take care of it.
The side advantage is that the test script will be greatly simplified. And it may become possible to use Workflow Engine to create packages workflows, alike Nicola suggested.