Refactoring WIP with model as per discussions and engine migrations [4/6]

This is a preliminary step for refactoring where a lot of old models have been removed
and new ones added.

I'm pulling out old code and migrating to models

crowbar.yml files are starting to change
new jigs/roles templates are in place
database migrations PASS
the web app is NOT running yet
tests are not passing


 crowbar.yml                                        |   13 ++++++------
 .../app/models/barclamp_chef/barclamp.rb           |   21 --------------------
 .../migrate/20121120013023_barclamp_import_chef.rb |    2 +-
 3 files changed, 7 insertions(+), 29 deletions(-)

Crowbar-Pull-ID: cf7927f48d67ce51709abf54344df90b1e91f2cc

Crowbar-Release: development