[improve][test] Remove prometheus tests from flaky group
@@ -86,7 +86,7 @@ import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
-@Test(groups = "flaky")
+@Test(groups = "broker")
public class PrometheusMetricsTest extends BrokerTestBase {
@BeforeMethod(alwaysRun = true)
