Really big data model refactoring.

There is no more the abstractions to "services without the choreography context", i.e.: Service vs ChorService and ServiceSpec vs
ChorServiceSpec. This previous design had lead to a too large ammount of data structure, making data model, our system, and client
programs a mass. Now we hope things to be a little more clear.
Non-static versoin of command line

New uses of command line should use this new version
NodeUpgrader -> NodeUpdater
moving integration tests
Chef-solo take 1
Take 2
take 3: removing default recipes option
Solving weird import problem
Minor changes to choose small openstack instance
adding recipe generator
adding recipe generator
Deployment Manager now working with chef solo
Rebase
Mergin