Broaden recheck/reverify pattern for vote matching

* modules/openstack_project/files/zuul/layout.yaml: Properly match
votes in a Gerrit change comment. The previous pattern only matched
a single negative or zeroed vote... cover positive votes and
multiple vote types in the same comment too.

Change-Id: Id8dc7fb4648e508598d2456f8877768281eef030
Merge "Broaden recheck/reverify pattern for vote matching"