Drop use of "filter" in test layouts

Change-Id: Iec6e3be64c5d838a6f1cc5c37fd64c4abfdab8ea
diff --git a/tests/fixtures/layouts/good_require_approvals.yaml b/tests/fixtures/layouts/good_require_approvals.yaml
index b7993b0..75bdc8e 100644
--- a/tests/fixtures/layouts/good_require_approvals.yaml
+++ b/tests/fixtures/layouts/good_require_approvals.yaml
@@ -12,7 +12,7 @@
               older-than: 48h
         - event: comment-added
           require-approval:
-            - email-filter: jenkins@example.com
+            - email: jenkins@example.com
               newer-than: 48h
         - event: comment-added
           require-approval:
@@ -21,7 +21,7 @@
           require-approval:
             - approved: 1
               username: jenkins
-              email-filter: jenkins@example.com
+              email: jenkins@example.com
     success:
       gerrit:
         verified: 1