Add testcase for classifier with transitive dependencies

Currently if a dependency is specified  the transitive items seem to be
not correctly collected, at laest there is one artifact (ehcache) that
has a transitive dependency that is invalid (javax.xml) and one can
select a different classifier (jakarta) to use the jakarta ones but this
seem not to happen at the moment.

This adds a testcase to illustrate the problem.

Author: laeubi

org.eclipse.m2e.pde.target.tests/src/org/eclipse/m2e/pde/target/tests/OSGiMetadataGenerationTest.java

@@ -19,6 +19,7 @@
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
+import java.net.URI;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
@@ -71,6 +72,36 @@ public void testBadSymbolicName() throws Exception {
 		assertStatusOk(getTargetStatus(target));
 	}
 
+	@Test
+	public void testWithClassifierFailsToCollect() throws Exception {
+		String targetXML = """
+				<location includeDependencyDepth="%depth%" includeDependencyScopes="compile,provided,runtime,system" includeSource="false" missingManifest="generate" type="Maven">
+					<dependencies>
+						<dependency>
+							<groupId>org.ehcache</groupId>
+							<artifactId>ehcache</artifactId>
+							<version>3.10.0</version>
+							<type>jar</type>
+							<classifier>jakarta</classifier>
+						</dependency>
+					</dependencies>
+				</location>
+				""";
+		for (String deepth : new String[] { "none", "direct", "infinite" }) {
+			ITargetLocation target = resolveMavenTarget(targetXML.replace("%depth%", deepth));
+			assertStatusOk(getTargetStatus(target));
+			TargetBundle[] bundles = target.getBundles();
+			// TODO check bundle and possible transtive dependencies!
+			for (TargetBundle targetBundle : bundles) {
+				URI location = targetBundle.getBundleInfo().getLocation();
+				assertTrue(
+						"bundle with classifier was not correctly fetched width deepth = " + deepth + " location = "
+								+ location,
+						location.toString().endsWith("org/ehcache/ehcache/3.10.0/ehcache-3.10.0-jakarta.jar"));
+			}
+		}
+	}
+
 	@Test
 	public void testSourceWithSignature() throws Exception {
 		ITargetLocation target = resolveMavenTarget(