Add an "id" property for integration instances.
Review Request #9284 — Created Oct. 19, 2017 and submitted
This adds an
idproperty on integrations that works as an alias for
integration_idproperty. While the latter is preferred, this alias
is necessary for some hooks to retain compatibiliy with both extensions
id) and integrations (which did not).
Made use of this with an integration and a hook that needed the ID. It
Unit tests pass.