Allow reverify on any approved change

that also has a vote from jenkins, regardless of the
value.

Change-Id: I678b392e5496bab79b84b6f6668611b754ba2578

modules/openstack_project/files/zuul/layout.yaml

@@ -25,8 +25,8 @@ pipelines:
         - event: comment-added
           comment_filter: (?i)^\s*reverify( (?:bug|lp)[\s#:]*(\d+))\s*$
           require-approval:
-            - verified: -2
-              username: jenkins
+            - approved: 1
+            - username: jenkins
         - event: comment-added
           require-approval:
             - verified: -2