fixup! Add a test to cover Distributor pruning feature

The createBranch method used earlier doesn't create actual replication
task, fix it to create branch using GerritApi instead.

Change-Id: I9be784572d17521d329452f81fed224a69f9cddc
diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDistributorIT.java b/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDistributorIT.java
index 5ade68d..3d0dfc1 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDistributorIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDistributorIT.java
@@ -19,6 +19,7 @@
 import com.google.gerrit.acceptance.TestPlugin;
 import com.google.gerrit.acceptance.UseLocalDisk;
 import com.google.gerrit.acceptance.WaitUtil;
+import com.google.gerrit.entities.BranchNameKey;
 import com.google.gerrit.entities.Project;
 import com.google.gerrit.server.git.WorkQueue;
 import java.time.Duration;
@@ -89,8 +90,9 @@
     reloadConfig();
 
     String newBranch = "refs/heads/foo_branch";
-    createBranch(project, "refs/heads/master", newBranch);
+    createBranch(BranchNameKey.create(project, newBranch));
 
+    assertThat(listWaitingReplicationTasks(newBranch)).hasSize(1);
     deleteWaitingReplicationTasks(newBranch); // This simulates the work being started by other node
 
     assertThat(waitForProjectTaskCount(0, Duration.ofSeconds(TEST_DISTRIBUTION_CYCLE_SECONDS)))