Remove maven from operations-guide and openstack-manuals

Use tox based publishing instead of maven.
The operations-guide jobs now named operations-guide-tox-doc-publishdocs.

For openstack-manuals use openstack-manuals-tox-doc-publishdocs as
single publishing job instead of the many jobs that build a single book
each.

Removes job openstack-docs-site as well, the openstack-doc-tools script
together with this change handles this as well.

Needs change to template '{name}-tox-doc-{envlist}' for injecting
of properties-file.

Also, update 'openstack-operations-guide-{lang}' and
'openstack-install-deploy-guide-{lang}' to use
upload-to-docs-site publisher instead of hand-written one.

Change-Id: Iea3005d2d092342318bd7be475af4ed78a9c1390
Merge "Remove maven from operations-guide and openstack-manuals"