move chef things to chef bc
A bunch of changes:
 * move cmdb_chef from crowbar to the chef barclamp
 * add cmdb chef connection info
 * fix issues around saving events and runs (must specify type explicitly)
 * start on a more content-full proposal - server & connection information
 * add chef to the crowbar cli, that replaces the client_key from the proposal with the actual key infromation.
Merge pull request #5 from aabes/pull-req-master-33d5ba0a8e9efe8a6125d594de548d6c58812b59

CDMB progress - cmdb_chef to chef barclamp, cmdb test fixes [2/2]