- The aggregate parent configuration now imports the required auto configuration classes such as ChannelBindingAutoConfiguration and EndpointAutoConfiguration
while `@EnableBinding` is still at the parent configuration to be able to share the binding configuration among the child applications
- Add `ConditionalOnMissingBean` in spring cloud stream auto configuration classes so that if `EnableAutoConfiguration` is enabled at child application classes
they don't get instantiated again
- Conditionally import EmbeddedServlet auto-configuration when web environment is enabled for parent
- Add test
Resolves#737
