Move namespace tests to root integration module

Prior to this change, spring-beans contained its own META-INF containing
spring.handlers and spring.schemas files in src/main/resources; it also
had files of the same name within src/test/resources/META-INF, causing
'duplicate resource' warnings and confusion in general.

This commit moves the com.foo test package, it's associated namespace
parsing tests and test versions of META-INF files to the root project
and it's src/test integration testing folder.

Issue: SPR-9431

src/test/java/com/foo/ComponentBeanDefinitionParserTests.java

@@ -30,7 +30,7 @@ import org.springframework.core.io.ClassPathResource;
 /**
  * @author Costin Leau
  */
-public class ComponentBeanDefinitionParserTest {
+public class ComponentBeanDefinitionParserTests {
 
 	private static DefaultListableBeanFactory bf;