puppet: fix zuul layout for legacy unit jobs
Fix the regex to match unit-3.* jobs to run legacy jobs only before
Pike.
@@ -1937,7 +1937,7 @@ jobs:
branch: ^(?!stable/liberty).*$
# Puppet 3 is not supported in Pike and beyond, so we don't want to test it anymore.
- - name: ^gate-(tripleo-heat-templates|tripleo-.*|puppet-.*)-(syntax|unit)-3-legacy-centos-7$
+ - name: ^gate-(tripleo-heat-templates|tripleo-.*|puppet-.*)-(syntax|unit)-3.*-legacy-centos-7$
branch: ^(stable/(mitaka|newton|ocata)).*$
# no need to run the jobs for doc / releasenotes / unittests patches
