As per victoria cycle testing runtime and community goal[1]
we need to migrate upstream CI/CD to Ubuntu Focal(20.04).

Fixing:
- bug#1886298
Bump the lower constraints for required deps which added python3.8 support
in their later version.

Story: #2007865
Task: #40207

Closes-Bug: #1886298

[1] https://governance.openstack.org/tc/goals/selected/victoria/migrate-ci-cd-jobs-to-ubuntu-focal.h>

Change-Id: Id3df43c47a3bdfce317331e1e3e4df775c4b4f32

This package is not actually used anymore in this repo, so this cleans
this up so it can be removed from global requirements.

Change-Id: I6f6065138760ba8af46f45f45e3a9bb7e8e0f75b
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

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.

Disable openstackdocs_auto_name to use 'project' variable as name.

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: I5f985549671e3b4f8c438f247fae0818d25b21f5

Ussuri Communtiy-wide goal:
https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html

Co-Authored-By: Andreas Jaeger <aj@suse.com>
Change-Id: I32d5dc317b821dee4a625506f227a8f5bfaaecfc

Sphinx 1.8 introduced [1] the '--keep-going' argument which, as its name
suggests, keeps the build running when it encounters non-fatal errors.
This is exceptionally useful in avoiding a continuous edit-build loop
when undertaking large doc reworks where multiple errors may be
introduced.

[1] https://github.com/sphinx-doc/sphinx/commit/e3483e9b045

Change-Id: Ief136815d6a0e1dfa0b8d1ffb42500fef38e39fe

Use sphinx-build and cleanup unused config.
Switch to openstackdocstheme 1.20.0 and remove obsolete settings from
conf.py files.

Update some RST files, they had wrong indentation.

Change-Id: Iaad2841db809f8a343fb8b1031cf8d0587d70442

According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
Let's switch to stestr as other projects have already moved to it.

[1] https://etherpad.openstack.org/p/YVR-python-pti

Change-Id: Ibbad6f4e63efbef4e2e144f3ba4218ce6579371a

Change-Id: I8d49c3c92789e660b81b07b457b83fbb14e9e650

This is not needed anymore, remove it.

Change-Id: Ida63a086125b5144f43e49bcc96516aa5f7bae4f

Change-Id: I90c341141344fff033889c286b8aad7a3419f14f

Change-Id: Ie7bb54fdb588d5a26bacfb78e5e5ea40f2cc7fa3

Change-Id: Idb370e693f86a7f528b8362233cbf844ffeec958

Change-Id: If72d3129e09ddcc2b1d944a71c7397cc85218af9

This seems to be unused as of https://review.openstack.org/#/c/509402/

Change-Id: I24d0c348b040f601f9f36b08972c27d0289540de

Change-Id: I480dbe933ad55beae31e6e492aada5a01cd2fc76

Change-Id: I8a34b0533b518fd7ada5863b9ff2a82c27609ee4

Change-Id: I5530c4ba801aeb5903b48e0c3c810d83d8d6227a

Change-Id: I4a89feb028462f0d3d79528d3827c1b085a157f4

Change-Id: I59b8adc143e016afddbbad2daa61f3a3b2c79e35

Change-Id: Ic1261c6cf954158dd5a89ba8f3515f4ac5cb0902

Change-Id: I78a34629457a279285d39e632472d3dd992223d7

Change-Id: I648307b10e585f89582fa56768cee164f99b17b6

Change-Id: I0e99cfae0b2a057552105820b443a93f23c197e1

Change-Id: Ia8f66355265e2344d8a1e95c8e21d7c8a642c6dc

Change-Id: I534146b394b602b821aaf9b6878d2a242223dc55

Change-Id: Id0e9e7aeaa29c4df0b364a59efc45dad744c2d7e

Change-Id: Iafff68ee0cb39436acd9bde1838aeca417ef6c64

Docutils 0.13.1 errors on non-local images.
Skip this release to prevent documentation build problems.

See
http://lists.openstack.org/pipermail/openstack-dev/2016-December/108742.html

Change-Id: If1efc40354979e9e732b1d5654f46c805d499523

Change-Id: I678f543ca8d75a27b89895f4caa6dc29736d4887

Change-Id: I27109db4018e32ac87ce4d85ad9177575b3856a9

Change-Id: Ied3c6a7b6fbad2306314b3d4f8cd3c39182327c7

Change-Id: I331b63a711fa4c3359d20e823cf676779d0ceb9b

We do not need Babel for this repository, remove it.

Change-Id: Ie7745a7e5d8c8442d84ec172dfa000f61c53523b

Change-Id: Ic94214345a272c1efe3212f9b630c7ca6c07dfbd

Change-Id: I5253b93d8b304c51d5cca13c859729bd174ae841

Change-Id: I17cd6c2550e227e5ccb6c727f292829a8871f573

Change-Id: Ibe273f9ab62a41bcfd372c188077a7b9a2e912eb

Change-Id: I626682281811f0e9ccaf1e93165d807a2ae2ab6c

Change-Id: I10e7beed951814d972bf1eaaaaaee1fe5bcf58bb

Change-Id: Ief735e19020de2704b86f6cad9090bec55b5a002

If you manually generate CLI reference documents without
cliff-tablib installed, all commands that allow you to specify
a '-f <format>' option will not have 'html' as one of the
supported values. For example, the diff will look like:

-   [-f {csv,html,json,table,value,yaml}]
+   [-f {csv,json,table,value,yaml}]

cliff-tablib has been added to the requirements to avoid this.

Change-Id: I0a655e25922788a4266ff201aa3574fc2e65a0ea

Change-Id: I61916ff536b224c4843668ee7e22e4a8815360c8

Change-Id: I88f87eeb9d0674d30525ef6843c052623e651eeb

Change-Id: I56b423c19f1469ff3c89f0726a62ac88078d2c57

Change-Id: Iabe1ef14c7a7fc37f240a22c48bdc7adf0b21e39

Argparse is not needed, adding it was a workaround. Remove it again
and remove testtools as well.

Change-Id: I6459a17d7ccd89805cfbcfbd0ceeeec7fa395312

Change-Id: I81f652f580cebb0e8785e441e3b2809a2d3757f5

Change-Id: I1f83cad7d3c1b14db7472da0ff97f2bb645d003a

Change-Id: Iec593e1da873b21e08ca6d3de93d15e3edcff611

Change-Id: I51b42c2f86a08103f7483ff740de1fcbccad590a