Add new properties to ServiceRegistry (#1172)
Add new properties to ServiceRegistry (#1172)

* Add two new properties:
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-service-serviceregistry.html

* Fix order of new attributes

pas256/troposphere,johnctitus/troposphere,cloudtools/troposphere,ikben/troposphere,ikben/troposphere,cloudtools/troposphere,pas256/troposphere,johnctitus/troposphere