Fix Redis components for JDK deserialization

It turns out that `JdkSerializationRedisSerializer` by default is
based on the default Java class loader which may lead into
`ClassCastException` downstream after deserialization

* Make all the `JdkSerializationRedisSerializer` usage (default)
in Redis components based on the BeanFactory `ClassLoader`
* Fix tests to call `setBeanClassLoader()`
* Fix Mark Fisher's name in the `MultipartFileReader` :-)

**Cherry-pick to 5.1.x, 5.0.x & 4.3.x after restoring diamonds**

spring-integration-http/src/main/java/org/springframework/integration/http/multipart/MultipartFileReader.java

@@ -23,7 +23,8 @@ import org.springframework.web.multipart.MultipartFile;
 /**
  * Strategy for reading {@link MultipartFile} content.
  *
- * @author mark Fisher
+ * @author Mark Fisher
+ *
  * @since 2.0
  */
 public interface MultipartFileReader<T> {