Refactor tests to make backend more configurable
Refactor tests to make backend more configurable

peterayeni/rapidsms,peterayeni/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms,peterayeni/rapidsms,peterayeni/rapidsms,lsgunth/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms,catalpainternational/rapidsms