StreamListenerMethodSetupOrchestrator is an API hook that allows
downstram binder implementations or applications to inject custom
strategies to alter the default StreamListener adapter method invocations.
This PR primarily focuses on allowing customizations on the oubound side.
For the inbound, StreamListenerMethodSetupOrchestrator interface provides
a default implementation.
Corresponding refactoring in StreamListenerAnnotationBeanPostProcessor.
By default StreamListenerAnnotationBeanPostProcessor will use the current
strategies used for invoking the StreamListener adapters. If beans are provided
for orchestration, they take precedence however.
Test changes.
Further polishing in StreamListenerAnnotationBeanPostProcessor.
Resolves#1177Resolves#1179
c1749ca866