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: I4a4ca9726fab1d0cf9a33311201b7f65951a0942
Depends-On: https://review.openstack.org/555034
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/.zuul.yaml b/.zuul.yaml
index 49dbe2d6..4541fbde 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -205,6 +205,8 @@
             # The functional-tips job only tests the latest and shouldn't be run
             # on the stable branches
             branches: ^(?!stable)
+        - openstack-tox-lower-constraints
     gate:
       jobs:
         - osc-functional-devstack
+        - openstack-tox-lower-constraints