Disable EclipseLink test class that freezes entire test suite.

For some reason, EclipseLinkNamespaceUserRepositoryTests freezes. Can't figure out the source, so we are disabling it for now.

See #2329
Original pull request: #2345.

src/test/java/org/springframework/data/jpa/repository/EclipseLinkNamespaceUserRepositoryTests.java

@@ -35,6 +35,7 @@ import org.springframework.test.context.ContextConfiguration;
  * @author Andrey Kovalev
  */
 @ContextConfiguration(value = "classpath:eclipselink.xml")
+@Disabled("hsqldb seems to hang on this test class without leaving a surefire report")
 class EclipseLinkNamespaceUserRepositoryTests extends NamespaceUserRepositoryTests {
 
 	/**