Fix README.rst and add syntax check

Additionally:
* fix Zuul configuration for lower-constraints job
* raise lower bound for Horizon (due to mox3 removal)
* remove Django from requirements.txt (already included from Horizon)

Change-Id: I44d6cd7477ac0d318705077109b4dc233a5a37d8
Story: 2002163
Task: 24398

.zuul.yaml

@@ -1,11 +1,7 @@
 - project:
     check:
       jobs:
-        - openstack-tox-lower-constraints:
-            required-projects:
-              - openstack/horizon
+        - openstack-tox-lower-constraints
     gate:
       jobs:
-        - openstack-tox-lower-constraints:
-            required-projects:
-              - openstack/horizon
+        - openstack-tox-lower-constraints

README.rst

@@ -124,5 +124,3 @@ directory of this project:
 ::
 
    $ tox -e py27,py35
-
-.. _Team and repository tags: https://governance.openstack.org/tc/reference/tags/index.html

lower-constraints.txt

@@ -31,7 +31,7 @@ funcsigs==1.0.0
 futurist==1.2.0
 greenlet==0.4.10
 hacking==0.12.0
-horizon==13.0.0
+horizon==14.0.0.0b3
 idna==2.6
 imagesize==0.7.1
 iso8601==0.1.11

requirements.txt

@@ -3,7 +3,5 @@
 # process, which may cause wedges in the gate later.
 oslo.log>=3.36.0 # Apache-2.0
 python-monascaclient>=1.8.0 # Apache-2.0
-Django<2;python_version<'3.0' # BSD
-Django<2.1;python_version>='3.0' # BSD
-horizon>=13.0.0 # Apache-2.0
+horizon>=14.0.0.0b3 # Apache-2.0
 six>=1.10.0 # MIT

tox.ini

@@ -28,7 +28,9 @@ setenv =
    DJANGO_SETTINGS_MODULE=monitoring.test.settings
 
 [testenv:pep8]
-commands = /bin/bash run_tests.sh -N --pep8
+commands =
+  /bin/bash run_tests.sh -N --pep8
+  python setup.py check --restructuredtext --strict
 
 [testenv:venv]
 commands = {posargs}