add lower-constraints job

Create a tox environment for running the unit tests against the lower
bounds of the dependencies.

Create a lower-constraints.txt to be used to enforce the lower bounds
in those tests.

Add openstack-tox-lower-constraints job to the zuul configuration.

See http://lists.openstack.org/pipermail/openstack-dev/2018-March/128352.html
for more details.

Change-Id: I530d7fced04c8e6668e92ed5feb78ae3a863979c
Depends-On: https://review.openstack.org/555034
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

.zuul.yaml

@@ -0,0 +1,7 @@
+- project:
+    check:
+      jobs:
+        - openstack-tox-lower-constraints
+    gate:
+      jobs:
+        - openstack-tox-lower-constraints

lower-constraints.txt

@@ -0,0 +1,147 @@
+alabaster==0.7.10
+appdirs==1.4.3
+asn1crypto==0.24.0
+Babel==2.5.3
+certifi==2018.1.18
+cffi==1.11.5
+chardet==3.0.4
+cliff==2.11.0
+cmd2==0.8.1
+colorama==0.3.9
+contextlib2==0.5.5
+coverage==4.5.1
+cryptography==2.1.4
+debtcollector==1.19.0
+decorator==4.2.1
+deprecation==2.0
+Django==1.11.11
+django-appconf==1.0.2
+django-babel==0.6.2
+django-compressor==2.2
+django-nose==1.4.5
+django-pyscss==2.0.2
+docutils==0.14
+dogpile.cache==0.6.5
+dulwich==0.19.0
+extras==1.0.0
+fasteners==0.14.1
+fixtures==3.0.0
+flake8==2.5.5
+futurist==1.6.0
+hacking==0.12.0
+horizon==13.0.0
+idna==2.6
+imagesize==1.0.0
+iso8601==0.1.12
+Jinja2==2.10
+jmespath==0.9.3
+jsonpatch==1.21
+jsonpointer==2.0
+jsonschema==2.6.0
+keystoneauth1==3.4.0
+linecache2==1.0.0
+MarkupSafe==1.0
+mccabe==0.2.1
+mock==2.0.0
+monotonic==1.4
+mox3==0.25.0
+msgpack==0.5.6
+munch==2.2.0
+netaddr==0.7.19
+netifaces==0.10.6
+nodeenv==1.2.0
+nose==1.3.7
+nose-exclude==0.5.0
+nosehtmloutput==0.0.5
+nosexcover==1.0.11
+openstack.nose-plugin==0.11
+openstackdocstheme==1.20.0
+openstacksdk==0.12.0
+os-client-config==1.29.0
+os-service-types==1.2.0
+osc-lib==1.10.0
+oslo.concurrency==3.26.0
+oslo.config==5.2.0
+oslo.context==2.20.0
+oslo.i18n==3.20.0
+oslo.log==3.37.0
+oslo.policy==1.34.0
+oslo.serialization==2.25.0
+oslo.utils==3.36.0
+osprofiler==2.0.0
+packaging==17.1
+pbr==3.1.1
+pep8==1.5.7
+Pint==0.8.1
+prettytable==0.7.2
+pycparser==2.18
+pyflakes==0.8.1
+Pygments==2.2.0
+pyinotify==0.9.6
+pymongo==3.6.1
+pyOpenSSL==17.5.0
+pyparsing==2.2.0
+pyperclip==1.6.0
+pyScss==1.3.4
+python-cinderclient==3.5.0
+python-dateutil==2.7.0
+python-glanceclient==2.9.1
+python-keystoneclient==3.15.0
+python-magnumclient==2.9.0
+python-mimeparse==1.6.0
+python-neutronclient==6.7.0
+python-novaclient==10.1.0
+python-swiftclient==3.5.0
+pytz==2018.3
+PyYAML==3.12
+rcssmin==1.0.6
+reno==2.7.0
+requests==2.18.4
+requestsexceptions==1.4.0
+rfc3986==1.1.0
+rjsmin==1.0.12
+selenium==3.11.0
+semantic-version==2.6.0
+simplejson==3.13.2
+six==1.11.0
+snowballstemmer==1.2.1
+Sphinx==1.6.5
+sphinxcontrib-websupport==1.0.1
+stevedore==1.28.0
+termcolor==1.1.0
+testtools==2.3.0
+traceback2==1.4.0
+unittest2==1.1.0
+urllib3==1.22
+warlock==1.3.0
+WebOb==1.7.4
+wrapt==1.10.11
+XStatic==1.0.1
+XStatic-Angular==1.5.8.0
+XStatic-Angular-Bootstrap==2.2.0.0
+XStatic-Angular-FileUpload==12.0.4.0
+XStatic-Angular-Gettext==2.3.8.0
+XStatic-Angular-lrdragndrop==1.0.2.2
+XStatic-Angular-Schema-Form==0.8.13.0
+XStatic-Bootstrap-Datepicker==1.3.1.0
+XStatic-Bootstrap-SCSS==3.3.7.1
+XStatic-bootswatch==3.3.7.0
+XStatic-D3==3.5.17.0
+XStatic-Font-Awesome==4.7.0.0
+XStatic-Hogan==2.0.0.2
+XStatic-Jasmine==2.4.1.1
+XStatic-jQuery==1.10.2.1
+XStatic-JQuery-Migrate==1.2.1.1
+XStatic-jquery-ui==1.12.0.1
+XStatic-JQuery.quicksearch==2.0.3.1
+XStatic-JQuery.TableSorter==2.14.5.1
+XStatic-JSEncrypt==2.3.1.1
+XStatic-mdi==1.4.57.0
+XStatic-objectpath==1.2.1.0
+XStatic-Rickshaw==1.5.0.0
+XStatic-roboto-fontface==0.5.0.0
+XStatic-smart-table==1.4.13.2
+XStatic-Spin==1.2.5.2
+XStatic-term.js==0.0.7.0
+XStatic-tv4==1.2.7.0
+xvfbwrapper==0.2.9

tox.ini

@@ -66,3 +66,10 @@ commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasen
 exclude = .venv,.git,.tox,dist,*lib/python*,*egg,build,panel_template,dash_template,local_settings.py,*/local/*,*/test/test_plugins/*,.ropeproject,node_modules
 max-complexity = 20
 
+
+[testenv:lower-constraints]
+basepython = python3
+deps =
+  -c{toxinidir}/lower-constraints.txt
+  -r{toxinidir}/test-requirements.txt
+  -r{toxinidir}/requirements.txt