Fix log4j muzzle (#10141)

Author: amarziali

dd-java-agent/instrumentation/log4j/log4j-2.0/build.gradle

@@ -13,6 +13,7 @@ configurations {
 
 muzzle {
   pass {
+    name = "default"
     group = 'org.apache.logging.log4j'
     module = 'log4j-core'
     versions = '[,2.7)'
@@ -27,6 +28,7 @@ muzzle {
   }
 
   pass {
+    name = "default"
     group = 'org.apache.logging.log4j'
     module = 'log4j-api'
     versions = '[,2.7)'

dd-java-agent/instrumentation/log4j/log4j-2.0/src/main/java/datadog/trace/instrumentation/log4j2/ThreadContextInstrumentation.java

@@ -37,6 +37,11 @@ public void methodAdvice(MethodTransformer transformer) {
         isTypeInitializer(), ThreadContextInstrumentation.class.getName() + "$ThreadContextAdvice");
   }
 
+  @Override
+  public String muzzleDirective() {
+    return "default";
+  }
+
   @Override
   public String[] helperClassNames() {
     return new String[] {