tree 671055d0df1c38a8cd59ba7780c39a0e67a2b2cd
parent afb4bd7930946f61b58255941cfbb1ac179cc8b5
author Andreas Jaeger <aj@suse.com> 1590948642 +0200
committer Brian Haley <haleyb.dev@gmail.com> 1591057148 +0000

Switch to newer openstackdocstheme and reno versions

Switch to openstackdocstheme 2.2.1 and reno 3.1.0 versions. Using
these versions will allow especially:
* Linking from HTML to PDF document
* Allow parallel building of documents
* Fix some rendering problems

Update Sphinx version as well.

Change pygments_style to 'native' since old theme version always used
'native' and the theme now respects the setting and using 'sphinx' can
lead to some strange rendering.

openstackdocstheme renames some variables, so follow the renames
before the next release removes them. A couple of variables are also
not needed anymore, remove them.

See also
http://lists.openstack.org/pipermail/openstack-discuss/2020-May/014971.html

Change-Id: I02b83b2d2ffa7e007f8150176ac881a8b6a53495