add brute force protection to 'mount public link' operation

Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>

apps/federatedfilesharing/lib/Controller/MountPublicLinkController.php

@@ -107,6 +107,7 @@ class MountPublicLinkController extends Controller {
 	 *
 	 * @NoCSRFRequired
 	 * @PublicPage
+	 * @BruteForceProtection publicLink2FederatedShare
 	 *
 	 * @param string $shareWith
 	 * @param string $token