Use MoreFiles.deleteRecursively with option ALLOW_INSECURE

otherwise all uploadvalidator tests fail on MacOS with
InsecureRecursiveDeleteException.

See Id783a2b9fdd67608d72bdd3b6fbf03ccd4cbe425

Change-Id: I087ee9fd73bf28b1221c999a31769a959d9a3d56

src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/ValidatorTestCase.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/ValidatorTestCase.java b/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/ValidatorTestCase.java
index 2702f95..09ba4af 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/ValidatorTestCase.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/uploadvalidator/ValidatorTestCase.java
@@ -15,6 +15,7 @@
 package com.googlesource.gerrit.plugins.uploadvalidator;
 
 import com.google.common.io.MoreFiles;
+import com.google.common.io.RecursiveDeleteOption;
 import java.io.File;
 import java.io.IOException;
 import org.eclipse.jgit.lib.Repository;
@@ -36,7 +37,7 @@
   public void cleanup() throws IOException {
     repo.close();
     if (repoFolder.exists()) {
-      MoreFiles.deleteRecursively(repoFolder.toPath());
+      MoreFiles.deleteRecursively(repoFolder.toPath(), RecursiveDeleteOption.ALLOW_INSECURE);
     }
   }
 }