Ensure at least one job is triggered in any change
Ensure at least one job is triggered in any change

This change is a partial revert of [1] and ensures that at least one
job is triggered for every change. Currently no job is triggered when
only .gitreview is updated and this prevent us from merging such
change.

[1] 1914b7ed1e499d13af4952992d0bf1728ca4db8e
Change-Id: I044a03c29c9c79168d8809f8ece81391c97c7233

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration