Do not use timer.getStartTime() when propating timers metrics

When the Fetch API client propagates the start time of the
E2E metrics, the native Gerrit metric timer value cannot be used
because it is not based on Epoch but on an internal JVM-dependent
timing.

Use instead the default System.currentTimeMillis() which is guaranteed
to be based on the Epoch.

Change-Id: I2ec7e5dc40dcb54f2cafc2be32e6c60fd93738e5

src/main/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueue.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueue.java b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueue.java
index f3e38fd..380ac8e 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueue.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueue.java
@@ -424,7 +424,7 @@
           FetchApiClient fetchClient = fetchClientFactory.create(source);
           repLog.info("Pull replication REST API fetch to {} for {}:{}", apiUrl, project, refName);
           Context<String> timer = fetchMetrics.startEnd2End(source.getRemoteConfigName());
-          HttpResult result = fetchClient.callFetch(project, refName, uri, timer.getStartTime());
+          HttpResult result = fetchClient.callFetch(project, refName, uri);
           long elapsedMs = TimeUnit.NANOSECONDS.toMillis(timer.stop());
           boolean resultSuccessful = result.isSuccessful();
           repLog.info(

src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java
index 48e0e71..6d4c499 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java
@@ -19,7 +19,6 @@
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyInt;
-import static org.mockito.Mockito.anyLong;
 import static org.mockito.Mockito.anyString;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.lenient;
@@ -138,8 +137,7 @@
     lenient()
         .when(fetchRestApiClient.callSendObjects(any(), anyString(), any(), any()))
         .thenReturn(httpResult);
-    when(fetchRestApiClient.callFetch(any(), anyString(), any(), anyLong()))
-        .thenReturn(fetchHttpResult);
+    when(fetchRestApiClient.callFetch(any(), anyString(), any())).thenReturn(fetchHttpResult);
     when(fetchRestApiClient.initProject(any(), any())).thenReturn(successfulHttpResult);
     when(successfulHttpResult.isSuccessful()).thenReturn(true);
     when(httpResult.isSuccessful()).thenReturn(true);
@@ -216,7 +214,7 @@
 
     objectUnderTest.onGitReferenceUpdated(event);
 
-    verify(fetchRestApiClient).callFetch(any(), anyString(), any(), anyLong());
+    verify(fetchRestApiClient).callFetch(any(), anyString(), any());
   }
 
   @Test
@@ -229,7 +227,7 @@
 
     objectUnderTest.onGitReferenceUpdated(event);
 
-    verify(fetchRestApiClient).callFetch(any(), anyString(), any(), anyLong());
+    verify(fetchRestApiClient).callFetch(any(), anyString(), any());
   }
 
   @Test
@@ -245,7 +243,7 @@
 
     objectUnderTest.onGitReferenceUpdated(event);
 
-    verify(fetchRestApiClient).callFetch(any(), anyString(), any(), anyLong());
+    verify(fetchRestApiClient).callFetch(any(), anyString(), any());
   }
 
   @Test