Add check-requirements to Zuul tests

Change-Id: I90ea330a359fc225d8db7e51f1bcfb88d4569454

.zuul.yaml

@@ -1,4 +1,5 @@
 - project:
     templates:
+      - check-requirements
       - openstack-cover-jobs
       - openstack-python3-jobs

requirements.txt

@@ -5,7 +5,7 @@
 pbr>=3.0.0 # Apache-2.0
 cliff>=2.6.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
-osc-lib>=1.5.1 # Apache-2.0
+osc-lib>=1.8.0 # Apache-2.0
 PrettyTable>=0.7.1 # BSD
 python-openstackclient>=3.11.0
 oslo.i18n>=2.1.0 # Apache-2.0
@@ -13,4 +13,4 @@ oslo.serialization>=1.10.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 keystoneauth1>=2.20.0 # Apache-2.0
 PyYAML>=3.10.0 # MIT
-requests!=2.12.2,!=2.13.0,>=2.10.0 # Apache-2.0
+requests>=2.14.2 # Apache-2.0

test-requirements.txt

@@ -4,7 +4,6 @@
 hacking>=3.0,<3.1.0  # Apache-2.0
 coverage>=3.6 # Apache-2.0
 ddt>=1.0.1 # MIT
-discover # BSD
 fixtures>=3.0.0 # Apache-2.0/BSD
 requests-mock>=0.7.0 # Apache-2.0
 os-client-config>=1.13.1 # Apache-2.0