Re-enable requiring a recent check result for gate
Re-enable requiring a recent check result for gate

This corrects the error that was causing changes not to be
enqueued in the gate after a verified +1 from jenkins.

If jenkins leaves a -2 vote, allow either a "reverify" comment or
an approval vote to retrigger the check pipeline.  This should then
retrigger the gate pipeline if it leaves a +1 verified vote as a
result.

Change-Id: I8ba26f254a1077b274182cb3212962428b00b478

open-switch/infra_project-config,coolsvap/project-config,noorul/os-project-config,anbangr/osci-project-config,openstack-infra/project-config,open-switch/infra_project-config,dongwenjuan/project-config,osrg/project-config,citrix-openstack/project-config,dongwenjuan/project-config,citrix-openstack/project-config,anbangr/osci-project-config,Tesora/tesora-project-config,noorul/os-project-config,coolsvap/project-config,osrg/project-config,Tesora/tesora-project-config,openstack-infra/project-config