Use the infra version of sphinx jobs for infra
Use the infra version of sphinx jobs for infra

We have some differences for infra jobs - use them in the infra
project-template.

Change-Id: I2bf87ea4853fdec4072ccdad94ee807e2b8e4b3b

openstack-infra/openstack-zuul-jobs,openstack-infra/openstack-zuul-jobs