Fix @ScyllaSkip/@ScyllaOnly class-level annotations with @rule

When BaseCcmRule is used as @rule (instance-level), JUnit passes a
Description for the test method, so description.getAnnotation() only
finds method-level annotations. Class-level annotations like
@ScyllaSkip on RequestIdGeneratorIT were not being detected.

Now also check description.getTestClass().getAnnotation() as a
fallback, which correctly finds class-level annotations regardless
of whether the rule is used as @rule or @ClassRule.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: dkropachev

test-infra/src/main/java/com/datastax/oss/driver/api/testinfra/ccm/BaseCcmRule.java

@@ -72,7 +72,13 @@ protected void after() {
   @Override
   public Statement apply(Statement base, Description description) {
     // Scylla-specific annotations
+    // Check both method-level and class-level annotations.
+    // When used as @Rule (not @ClassRule), description.getAnnotation() only finds
+    // method-level annotations, so we also check the test class directly.
     ScyllaSkip scyllaSkip = description.getAnnotation(ScyllaSkip.class);
+    if (scyllaSkip == null && description.getTestClass() != null) {
+      scyllaSkip = description.getTestClass().getAnnotation(ScyllaSkip.class);
+    }
     if (scyllaSkip != null) {
       if (CcmBridge.isDistributionOf(BackendType.SCYLLA)) {
         return new Statement() {
@@ -88,6 +94,9 @@ public void evaluate() {
     }
 
     ScyllaOnly scyllaOnly = description.getAnnotation(ScyllaOnly.class);
+    if (scyllaOnly == null && description.getTestClass() != null) {
+      scyllaOnly = description.getTestClass().getAnnotation(ScyllaOnly.class);
+    }
     if (scyllaOnly != null) {
       if (!CcmBridge.isDistributionOf(BackendType.SCYLLA)) {
         return new Statement() {