make api-guide and api-ref targets voting
make api-guide and api-ref targets voting

These are passing on nova and barbican, which are the only people
using these jobs. We should make them voting so there isn't backslide
by accident.

Change-Id: I12ceb97eaae119c8d323dbfcaf875960e1e3a7a3

openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config