Add missing changelog notes after 11.14.2.
Contribution info for https://github.com/opscode/chef/pull/2196.
Contribution info for https://github.com/opscode/chef/pull/2251.
Contribution info for https://github.com/opscode/chef/pull/2270.
Contribution info for https://github.com/opscode/chef/pull/2277.
Merge pull request #2296 from opscode/sersut/last-contrib-info

Last contribution pass before Chef 12.