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.

Update the dependencies needed to make the unit tests pass while
constrained to the lower bounds.

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

Co-Authored-By: Nguyen Hai <nguyentrihai93@gmail.com>
Change-Id: I2a8f465c8b08370517cbec857933b08fca94ca38
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 +1,46 @@
+alabaster==0.7.10
+Babel==2.3.4
+certifi==2018.1.18
+chardet==3.0.4
+coverage==4.0
+docutils==0.11
+dulwich==0.15.0
+extras==1.0.0
+fixtures==3.0.0
+flake8==2.2.4
+futures==3.0.0
+hacking==0.10.0
+idna==2.6
+imagesize==0.7.1
+iso8601==0.1.8
+Jinja2==2.10
+keystoneauth1==3.4.0
+linecache2==1.0.0
+MarkupSafe==1.0
+mccabe==0.2.1
+mock==1.2.0
+netaddr==0.7.10
+openstackdocstheme==1.18.1
+oslo.config==1.2.0
+oslosphinx==4.7.0
+pbr==2.0.0
+pep8==1.5.7
+PrettyTable==0.7
+pyflakes==0.8.1
+Pygments==2.2.0
+python-keystoneclient==3.8.0
+python-mimeparse==1.6.0
+python-subunit==1.0.0
+pytz==2013.6
+PyYAML==3.12
+reno==2.5.0
+requests==2.14.2
+six==1.10.0
+snowballstemmer==1.2.1
+sphinx==1.6.2
+sphinxcontrib-websupport==1.0.1
+testrepository==0.0.18
+testtools==2.2.0
+traceback2==1.4.0
+unittest2==1.1.0
+urllib3==1.22

requirements.txt

@@ -1,3 +1,6 @@
-futures>=3.0;python_version=='2.7' or python_version=='2.6' # BSD
-requests>=1.1
-six>=1.5.2
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+futures>=3.0.0;python_version=='2.7' or python_version=='2.6' # BSD
+requests>=2.14.2 # Apache-2.0
+six>=1.10.0 # MIT

setup.cfg

@@ -34,7 +34,7 @@ data_files =
 
 [extras]
 keystone =
-    python-keystoneclient>=0.7.0
+  python-keystoneclient>=3.8.0 # Apache-2.0
 
 [entry_points]
 console_scripts =

setup.py

@@ -17,10 +17,16 @@
 # THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools, sys
 
-if sys.version_info < (2, 7):
-    sys.exit('Sorry, Python < 2.7 is not supported for'
-             ' python-swiftclient>=3.0')
+import setuptools
+
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
 
 setuptools.setup(
-    setup_requires=['pbr'],
+    setup_requires=['pbr>=2.0.0'],
     pbr=True)

test-requirements.txt

@@ -1,9 +1,10 @@
-hacking>=0.10.0,<0.11
+hacking<0.11,>=0.10.0
 
-coverage>=3.6
-mock>=1.2
+coverage!=4.4,>=4.0 # Apache-2.0
+keystoneauth1>=3.4.0  # Apache-2.0
+mock>=1.2.0 # BSD
 oslosphinx>=4.7.0  # Apache-2.0
-sphinx>=1.1.2,<1.2
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 testrepository>=0.0.18
-reno>=1.8.0,!=2.3.1 # Apache-2.0
-openstackdocstheme>=1.16.0 # Apache-2.0
+reno>=2.5.0 # Apache-2.0
+openstackdocstheme>=1.18.1 # Apache-2.0

tox.ini

@@ -70,3 +70,10 @@ commands = bindep test
 
 [testenv:releasenotes]
 commands = sphinx-build -a -W -E -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
+
+[testenv:lower-constraints]
+basepython = python3
+deps =
+  -c{toxinidir}/lower-constraints.txt
+  -r{toxinidir}/test-requirements.txt
+  .[keystone]