Adjust plugin code after gerrit changes

Change-Id: I880db99820f9448a22fe23e898af29d92e5a20e7
diff --git a/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/UploadValidatorIT.java b/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/UploadValidatorIT.java
index 45fe462..b81a97d 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/UploadValidatorIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/UploadValidatorIT.java
@@ -72,7 +72,7 @@
         .add(allow(Permission.PUSH).ref("refs/*").group(SystemGroupBackend.REGISTERED_USERS))
         .update();
 
-    clone = GitUtil.cloneProject(project, registerRepoConnection(project, admin));
+    clone = cloneProject(project, admin);
   }
 
   @Test
@@ -213,8 +213,7 @@
                 "    group = " + adminGroupUuid(),
                 "    rejectDuplicatePathnames = true"));
 
-    TestRepository<InMemoryRepository> userClone =
-        GitUtil.cloneProject(project, registerRepoConnection(project, user));
+    TestRepository<InMemoryRepository> userClone = cloneProject(project, user);
     pushFactory
         .create(
             user.newIdent(),