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, 3 insertions, 3 deletions

diff --git a/tox.ini b/tox.ini
index 62fe647..c1c1104 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py35,py36,py37,pypy,pep8,releasenotes
+envlist = py27,py37,pypy,pep8,releasenotes
 minversion = 2.0
 skipsdist = True
 
@@ -27,8 +27,8 @@ commands = oslo_debug_helper -t saharaclient/tests/unit {posargs}
 basepython = python2.7
 commands = oslo_debug_helper -t saharaclient/tests/unit {posargs}
 
-[testenv:debug-py35]
-basepython = python3.5
+[testenv:debug-py36]
+basepython = python3.6
 commands = oslo_debug_helper -t saharaclient/tests/unit {posargs}
 
 [testenv:cover]