Fixed missing const.

Author: AlexeyKuznetsov-DD

dd-trace-core/src/traceAgentTest/groovy/MetricsIntegrationTest.groovy

@@ -1,4 +1,7 @@
-import datadog.communication.ddagent.DDAgentFeaturesDiscovery
+import static datadog.communication.ddagent.DDAgentFeaturesDiscovery.V06_METRICS_ENDPOINT
+import static datadog.trace.common.metrics.EventListener.EventType.OK
+import static java.util.concurrent.TimeUnit.SECONDS
+
 import datadog.communication.http.OkHttpUtils
 import datadog.metrics.api.Histograms
 import datadog.metrics.impl.DDSketchHistograms
@@ -10,14 +13,10 @@ import datadog.trace.common.metrics.EventListener
 import datadog.trace.common.metrics.MetricKey
 import datadog.trace.common.metrics.OkHttpSink
 import datadog.trace.common.metrics.SerializingMetricWriter
-import okhttp3.HttpUrl
-
 import java.util.concurrent.CopyOnWriteArrayList
 import java.util.concurrent.CountDownLatch
 import java.util.concurrent.atomic.AtomicLongArray
-
-import static datadog.trace.common.metrics.EventListener.EventType.OK
-import static java.util.concurrent.TimeUnit.SECONDS
+import okhttp3.HttpUrl
 
 class MetricsIntegrationTest extends AbstractTraceAgentTest {
 
@@ -31,7 +30,7 @@ class MetricsIntegrationTest extends AbstractTraceAgentTest {
     def latch = new CountDownLatch(1)
     def listener = new BlockingListener(latch)
     def agentUrl = Config.get().getAgentUrl()
-    OkHttpSink sink = new OkHttpSink(OkHttpUtils.buildHttpClient(HttpUrl.parse(agentUrl), 5000L), agentUrl, DDAgentFeaturesDiscovery.V6_METRICS_ENDPOINT, true, false, [:])
+    OkHttpSink sink = new OkHttpSink(OkHttpUtils.buildHttpClient(HttpUrl.parse(agentUrl), 5000L), agentUrl, V06_METRICS_ENDPOINT, true, false, [:])
     sink.register(listener)
 
     when: