Fix CDI Integration Tests failures based on JDK 17 upgrade.

Change access modifier on inner Person entity class and PersonRepository interface to public in the GemfireRepositoryBeanTest class.

Resolves spring-projectsgh-538.

Author: jxblum

spring-data-geode/src/test/java/org/springframework/data/gemfire/repository/cdi/GemfireRepositoryBeanTest.java

@@ -339,8 +339,8 @@ public Set<Entry<Long, Object>> entrySet() {
 		}
 	}
 
-	static class Person {}
+	public static class Person {}
 
-	interface PersonRepository extends GemfireRepository<Person, Long> { }
+	public interface PersonRepository extends GemfireRepository<Person, Long> { }
 
 }