Use global-requirements for requirements

This updates cloudkitty's requirement and setup files in order to use
openstack/requirements for constraints. This will help to avoid dependency
conflicts when cloudkitty is deployed in an openstack context.

Work items:

* Updated requirements.txt, test-requirements.txt and setup.py with the
  `update-requirements` tool provided by openstack/requirements.

* Added a lower-constraints.txt file.

* Added the "check-requirements" zuul job template to the CI.

Change-Id: I5aab02374523be83a65c8b7f47f1df5e93b5a3d2

.zuul.yaml

@@ -24,6 +24,7 @@
 
 - project:
     templates:
+      - check-requirements
       - openstack-cover-jobs
       - openstack-python-jobs
       - openstack-python35-jobs

lower-constraints.txt

@@ -0,0 +1,43 @@
+# requirements
+pbr==2.0.0 # Apache-2.0
+alembic==0.8.0 # MIT
+eventlet==0.18.2 # MIT
+keystonemiddleware==4.0.0 # Apache-2.0
+gnocchiclient==2.5.0 # Apache-2.0
+python-monascaclient==1.9.0 # Apache-2.0
+python-keystoneclient==1.9.0 # Apache-2.0
+keystoneauth1==2.1.0 # Apache-2.0
+iso8601==0.1.9 # MIT
+PasteDeploy==1.5.0 # MIT
+pecan==1.0.0 # BSD
+WSME==0.8 # MIT
+oslo.config==3.7.0 # Apache-2.0
+oslo.context==2.9.0 # Apache-2.0
+oslo.concurrency==3.5.0 # Apache-2.0
+oslo.db==4.1.0 # Apache-2.0
+oslo.i18n==2.1.0 # Apache-2.0
+oslo.log==1.14.0 # Apache-2.0
+oslo.messaging==5.24.2 # Apache-2.0
+oslo.middleware==3.27.0 # Apache-2.0
+oslo.policy==0.5.0 # Apache-2.0
+oslo.utils==3.5.0 # Apache-2.0
+SQLAlchemy==1.0.10 # MIT
+six==1.9.0 # MIT
+stevedore==1.5.0 # Apache-2.0
+tooz==1.28.0 # Apache-2.0
+voluptuous==0.11.1 # BSD-3
+
+# test-requirements
+coverage==3.6 # Apache-2.0
+kombu==4.0.0 # BSD
+ddt==1.0.1 # MIT
+gabbi==1.26.1 # Apache-2.0
+testscenarios==0.4 # Apache-2.0/BSD
+stestr==2.0.0 # Apache-2.0
+mock==1.2 # BSD
+sphinx==1.6.2 # BSD
+openstackdocstheme==1.20.0 # Apache-2.0
+oslotest==1.10.0 # Apache-2.0
+sphinxcontrib-pecanwsme==0.8 # Apache-2.0
+reno==1.8.0  # Apache2
+sphinxcontrib-httpdomain==1.6.0 # Apache-2.0

requirements.txt

@@ -1,30 +1,30 @@
 # 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.
-pbr>=1.6 # Apache-2.0
+pbr>=2.0.0,!=2.1.0 # Apache-2.0
 alembic>=0.8.0 # MIT
-eventlet!=0.18.3,>=0.18.2 # MIT
+eventlet>=0.18.2,!=0.18.3,!=0.20.1,!=0.21.0,!=0.23.0 # MIT
-keystonemiddleware!=4.1.0,>=4.0.0 # Apache-2.0
+keystonemiddleware>=4.0.0 # Apache-2.0
 gnocchiclient>=2.5.0 # Apache-2.0
-python-monascaclient>=1.7.0 # Apache-2.0
+python-monascaclient>=1.9.0 # Apache-2.0
-python-keystoneclient!=1.8.0,!=2.1.0,>=1.6.0 # Apache-2.0
+python-keystoneclient>=1.9.0,!=2.1.0 # Apache-2.0
 keystoneauth1>=2.1.0 # Apache-2.0
 iso8601>=0.1.9 # MIT
 PasteDeploy>=1.5.0 # MIT
-pecan>=1.0.0 # BSD
+pecan>=1.0.0,!=1.0.2,!=1.0.3,!=1.0.4,!=1.2 # BSD
 WSME>=0.8 # MIT
-oslo.config>=3.7.0 # Apache-2.0
+oslo.config>=3.7.0,!=4.3.0,!=4.4.0 # Apache-2.0
 oslo.context>=2.9.0 # Apache-2.0
 oslo.concurrency>=3.5.0 # Apache-2.0
 oslo.db>=4.1.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.log>=1.14.0 # Apache-2.0
-oslo.messaging!=5.25.0,>=5.24.2 # Apache-2.0
+oslo.messaging>=5.24.2,!=9.0.0 # Apache-2.0
 oslo.middleware>=3.27.0 # Apache-2.0
 oslo.policy>=0.5.0 # Apache-2.0
 oslo.utils>=3.5.0 # Apache-2.0
-SQLAlchemy<1.1.0,>=1.0.10 # MIT
+SQLAlchemy>=1.0.10,!=1.1.5,!=1.1.6,!=1.1.7,!=1.1.8 # MIT
 six>=1.9.0 # MIT
 stevedore>=1.5.0 # Apache-2.0
 tooz>=1.28.0 # Apache-2.0
-voluptuous>=0.11.1,<1.0.0 # BSD-3
+voluptuous>=0.11.1 # BSD License

setup.py

@@ -25,5 +25,5 @@ except ImportError:
     pass
 
 setuptools.setup(
-    setup_requires=['pbr>=1.8'],
+    setup_requires=['pbr>=2.0.0'],
     pbr=True)

test-requirements.txt

@@ -3,18 +3,18 @@
 # process, which may cause wedges in the gate later.
 
 # hacking should be first
-hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
+hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 
-coverage>=3.6 # Apache-2.0
+coverage>=3.6,!=4.4 # Apache-2.0
-kombu<4.0.0 # BSD
+kombu>=4.0.0,!=4.0.2 # BSD
 ddt>=1.0.1 # MIT
 gabbi>=1.26.1 # Apache-2.0
 testscenarios>=0.4 # Apache-2.0/BSD
 stestr>=2.0.0 # Apache-2.0
 mock>=1.2 # BSD
-sphinx>=1.6.2 # BSD
+sphinx>=1.6.2,!=1.6.6,!=1.6.7 # BSD
 openstackdocstheme>=1.20.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
-sphinxcontrib-httpdomain # BSD
+sphinxcontrib-httpdomain>=1.6.0 # BSD
 sphinxcontrib-pecanwsme>=0.8 # Apache-2.0
-reno>=1.8.0  # Apache2
+reno>=1.8.0 # Apache-2.0