Mark metric tests flaky (#10113)

Author: jpbempel

dd-smoke-tests/debugger-integration-tests/src/test/java/datadog/smoketest/MetricProbesIntegrationTest.java

@@ -7,13 +7,15 @@
 import com.datadog.debugger.el.DSL;
 import com.datadog.debugger.el.ValueScript;
 import com.datadog.debugger.probe.MetricProbe;
+import datadog.trace.test.util.Flaky;
 import datadog.trace.test.util.NonRetryable;
 import java.io.IOException;
 import java.util.concurrent.atomic.AtomicBoolean;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
+@Flaky
 @NonRetryable
 public class MetricProbesIntegrationTest extends SimpleAppDebuggerIntegrationTest {