Channel creation logic for channels that are not explicitly defined but identified via an 'input-channel' attribute on the corresponding endpoint is now done by ChannelInitializer - an InitializingBean implementation.
This bean plays a role of pre-instantiator since it is instantiated and initialized as the very first bean of all SI beans using AbstractIntegrationNamespaceHandler
INT-2434-v3 polishing
INT-2434-v3 polishing, changed ChannelCreatingFactoryBean from BeanFactoryPostProcessor to BeanFactoryAware
INT-2434 polishing
fix the test
changed the default name of the CHANNEL_CREATOR_BEAN_NAME to a simple name
added additional test
changed ChannelCreatingFactoryBean from FactoryBean to InitializingBean and renamed it to ChannelInitializer
INT-2434 added test validating how automatic channel creation can be disabled
INT-2434 polished based on the latest PR comments
INT-2434-v3 polishing based on comments and discussions with @markfisher and @garyrussell. Added support for disabling aut-creatioin of channels
INT-2434-v3 polished based on @garyrussell last comments
INT-2434-v3 final polishing
458eac43da