We mock a `MessageHandler` on the receiver side, but still send the
message over MQTT.
Add `CountDownLatch` to the mocked method and wait for its count before
asserting a received message
This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).
# Fixed URLs
## Fixed Success
These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.
* [ ] http://www.apache.org/licenses/LICENSE-2.0 with 300 occurrences migrated to:
https://www.apache.org/licenses/LICENSE-2.0 ([https](https://www.apache.org/licenses/LICENSE-2.0) result 200).
Remove `@IntegrationComponentScan` from Boot samples
Since the latest Spring Boot utilize already `@IntegrationComponentScan` for the `@SpringBootApplication` class package, there is no reason to worry about lost `@MessagingGateway`
Reflect Kafka samples changes according latest Spring Boot fixes
* Fix compatibility after Java DSL migration to the SI Core
* Also upgrade all the JMS sample to the JMS 2.0
* Fix default `connectionFactory` bean reference to the current `jmsConnectionFactory`
* Remove unsupported JPA-1.0 Spec via `OpenJpaAutoConfiguration`, since the minimum now is JPA-2.0
* Remove non-lambda sample since minimum now is Java 8
* Rename `PromiseTest` to `MonoTest` and fix it to Reactor 3.0
* Fix `stomp-server.xml` to use proper Reactor 3.0 `eactor.util.function.Tuples` for SpEL
* Regenerate POMs
