Make jigs even more late-bound. [4/5]

This pull request series makes jigs even more late bound, and reworks
how roles are defined and loaded from crowbar.yml to make it a
seperate section from the to-be-written jigs section, as the jigs
section should concern itself with declaring what (if any) jigs a
barclamp provides.


 crowbar.yml |   12 ++++++++++++
 1 file changed, 12 insertions(+)

Crowbar-Pull-ID: b068d7f10391d12115dc134ecb5708d4b046de93

Crowbar-Release: development