Test latest struts 6.x version (#12948)

Author: laurit

instrumentation/struts/struts-2.3/javaagent/build.gradle.kts

@@ -27,7 +27,7 @@ dependencies {
   testInstrumentation(project(":instrumentation:jetty:jetty-8.0:javaagent"))
   testInstrumentation(project(":instrumentation:struts:struts-7.0:javaagent"))
 
-  latestDepTestLibrary("org.apache.struts:struts2-core:6.0.+")
+  latestDepTestLibrary("org.apache.struts:struts2-core:6.+")
 }
 
 tasks.withType<Test>().configureEach {

instrumentation/struts/struts-7.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/struts/v7_0/Struts2InstrumentationModule.java

@@ -5,12 +5,14 @@
 
 package io.opentelemetry.javaagent.instrumentation.struts.v7_0;
 
+import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.hasClassesNamed;
 import static java.util.Collections.singletonList;
 
 import com.google.auto.service.AutoService;
 import io.opentelemetry.javaagent.extension.instrumentation.InstrumentationModule;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import java.util.List;
+import net.bytebuddy.matcher.ElementMatcher;
 
 @AutoService(InstrumentationModule.class)
 public class Struts2InstrumentationModule extends InstrumentationModule {
@@ -19,6 +21,12 @@ public Struts2InstrumentationModule() {
     super("struts", "struts-7.0");
   }
 
+  @Override
+  public ElementMatcher.Junction<ClassLoader> classLoaderMatcher() {
+    // class is in different package before 7.0
+    return hasClassesNamed("org.apache.struts2.config.entities.ActionConfig");
+  }
+
   @Override
   public List<TypeInstrumentation> typeInstrumentations() {
     return singletonList(new ActionInvocationInstrumentation());