Fix typo in publish-infra-index
It's "subpath" not "sub_path" - fix typo in publish-infra-index so that
publishing works again.
The typo was introduced in this
change should really fix the job.
- zuul: openstack/openstack-zuul-jobs
vars:
tox_envlist: infra-docs
- afs_sub_path: "/infra"
+ afs_subpath: "/infra"
secrets:
- secret: afsdocs_secret
name: afs
