py3: use the train test template and other updatestrain-em2.3.0

Use the unified unit test Zuul template for train, according the
community goal. Also, update the setup.cfg classifiers accordingly.

Update the debug test environment. Adding "debug-py36" is enough;
if a distribution supports 3.7, the "debug" tox environment
can be used.

Finally, keep only the most recent environment in the default
set executed when calling tox.

Story: #2005924
Task: #34244

Change-Id: Iad4a6e933ad416eb67a2f144540fe79e97938bec

1 files changed, 1 insertions, 3 deletions

diff --git a/.zuul.yaml b/.zuul.yaml
index 29eb3e5..2ce6102 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -3,9 +3,7 @@
       - openstack-cover-jobs
       - openstack-lower-constraints-jobs
       - openstack-python-jobs
-      - openstack-python35-jobs
-      - openstack-python36-jobs
-      - openstack-python37-jobs
+      - openstack-python3-train-jobs
       - publish-openstack-docs-pti
       - check-requirements
       - release-notes-jobs-python3