Uncap jsonschemastable/stein

jsonschema was uncapped in the global requirements. We need to uncap it
locally now too.

NOTE(stephenfin): This is needed to resolve conflicts with the new
dependency resolver found in pip 20.3. We also need to include the
following additional requirement-related changes to get things passing:

- doc/requirements.txt
  Ensure specific versions of Sphinx are used on different Python
  versions.

- lower-constraints.txt
  Remove hacking since it's not necessary

- test-requirements.txt
  Remove hacking since it's not necessary

- tox.ini
  Set a hacking version to avoid installing the latest and greatest
  versions

Conflicts:
  test-requirements.txt

Changes:
  doc/requirements.txt

NOTE(stephenfin): Conflicts are because the version of hacking used here
is different to stable/train. We also need to update the Sphinx versions
listed in 'doc/requirements.txt' to match those provided by
openstack/requirements.

Change-Id: Ia6ad2c7e62aebc81386610e9d16c8bb8a162d70f
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
(cherry picked from commit c7bb5d65abb4c9bc3a1d8f480018a9d661f7b36e)
(cherry picked from commit 68c7bac81d5713a8b9a885db1ab824afaf28813c)

1 files changed, 0 insertions, 1 deletions

diff --git a/lower-constraints.txt b/lower-constraints.txt
index 3e9ce30..e46f9ff 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -11,7 +11,6 @@ extras==1.0.0
 fixtures==3.0.0
 flake8==2.5.5
 future==0.16.0
-hacking==0.12.0
 idna==2.6
 iso8601==0.1.12
 jsonpatch==1.16