Proposed governance and maintenance policy

Below are the proposed governance and maintenance policy for Chef. :)
I think two of the main responsibilities of Lt are: 

* Publish a roadmap (two quarters out)
* Release calendar for code outside of chef client/chef server

While these are being responsibilities of Lt, maintainers & community should be heavily involved in the production of these. I'm not super clear on what's the advantage of having multiple Lts. I think we can achieve scalability by having more sub-components with dedicated LTs rather than having multiple Lts for a single components. 

E.g. in order to make Chef Core scalabie we can have an Lt for Attributes / Resource - Provider Infrastructure, etc...