Sync the versions with cinder's, which were recently updated by
I42af21b1c4247d04d479f1fc1ecd6f9baac0cfc9. Also increased the
minimum version of tempest to the most recent release.

Also added indirect dependencies to test-requirements.txt in order
to limit the number of versions considered by the resolver.

Change-Id: I7b4bc7b392b2192e0c832c4f0148546a5920b9e2

Using the cinderclient without a subcommand while
passing an optional argument triggers the raw Python
error `ERROR: 'Namespace' object has no attribute
'func'`. This bug can be reproduced by issuing the
command `cinder --os-volume-api-version 3.40`.
Added a default value to `func` and an empty value to
`command` as placeholders so that a help message is
shown instead of the Python error.

Change-Id: Idb51e8635b97f0da2976f3268d5e19100ec77203
Closes-Bug: #1867061

Examples in this section should use a Python 3 environment and not py27.

Change-Id: If082b92e089af980e411b4b4c1319e462862a55f
Closes-Bug: #1866375

This is an automatically generated patch to ensure unit testing
is in place for all the of the tested runtimes for wallaby.

See also the PTI in governance [1].

[1]: https://governance.openstack.org/tc/reference/project-testing-interface.html

Change-Id: I4aed8f56609dea21a8170bd5f5d242cfac045dde

Add file to the reno documentation build to show release notes for
stable/victoria.

Use pbr instruction to increment the minor version number
automatically so that master versions are higher than the versions on
stable/victoria.

Change-Id: Ia36030fb2858ddf4c6672173cde510dd8f8b7a53
Sem-Ver: feature