HOTFIX: Cherry-picks commit from branch 'dave' to change authSource in mongoose/connection.js to config setting,  rather than being hard coded.
HOTFIX: Cherry-picks commit from branch 'dave' to change authSource in mongoose/connection.js to config setting,  rather than being hard coded.

dandahle/Catalyst-AppVetting,dandahle/Capricornus---Catalyst,dandahle/Catalyst-AppVetting,dandahle/Capricornus---Catalyst,dandahle/Capricornus---Catalyst,dandahle/Catalyst-AppVetting