Use --publish for openstack-doc-test

This requires openstack-doc-test 0.11: We now can use --publish for
openstack-doc-test. This replaces --nocreate-index.

Change-Id: I91f156f664133f20a675908bd081ad2d0bdbb393
Merge "Use --publish for openstack-doc-test"
Fix typo in tox.ini

It really needs to be two "-"s.

Change-Id: Ia123f054c5968e0862a5df3f0204bba479ddfcc6