59860c0a4b
JIRA: https://jira.spring.io/browse/INT-4535 For the proper Spring Test Context caching support, the `ContextCustomizer` must implement `hashCode()` and `equals()` methods * Add `hashCode()` and `equals()` into the `MockIntegrationContextCustomizer` * Ensure that caching works as excepted with the `CachedSpringIntegrationTestAnnotationTests` its two sub-classes **Cherry-pick to 5.0.x**