Skip tests when feature flag is disabled

Author: felixbarny

x-pack/plugin/otel-data/src/internalClusterTest/java/org/elasticsearch/action/otlp/OTLPMetricsIndexingIT.java

@@ -119,6 +119,7 @@ public void setUp() throws Exception {
             var templates = client().execute(GetComposableIndexTemplateAction.INSTANCE, getReq).actionGet().indexTemplates();
             assertThat(templates, not(anEmptyMap()));
         });
+        assumeTrue("Requires otlp_metrics feature flag to be enabled", OTelPlugin.OTLP_METRICS_ENABLED);
     }
 
     private int getHttpPort() {

x-pack/plugin/otel-data/src/main/java/org/elasticsearch/xpack/oteldata/OTelPlugin.java

@@ -36,6 +36,8 @@
 
 public class OTelPlugin extends Plugin implements ActionPlugin {
 
+    public static final boolean OTLP_METRICS_ENABLED = new FeatureFlag("otlp_metrics").isEnabled();
+
     // OTEL_DATA_REGISTRY_ENABLED controls enabling the index template registry.
     //
     // This setting will be ignored if the plugin is disabled.
@@ -46,7 +48,6 @@ public class OTelPlugin extends Plugin implements ActionPlugin {
         Setting.Property.Dynamic
     );
 
-    private static final boolean OTLP_METRICS_ENABLED = new FeatureFlag("otlp_metrics").isEnabled();
     private static final Logger logger = LogManager.getLogger(OTelPlugin.class);
 
     private final SetOnce<OTelIndexTemplateRegistry> registry = new SetOnce<>();