Add Python 3 Train unit tests

1. This is a mechanically generated patch to ensure unit testing is in place
for all of the Tested Runtimes for Train.
2. Remove a unnecessary space

See the Train python3-updates goal document for details:
https://governance.openstack.org/tc/goals/train/python3-updates.html

Change-Id: I89846e571cfabca4e6188be8a72337111bfa9bff

.zuul.yaml

@@ -37,11 +37,12 @@
     timeout: 3600
 
 - project:
+    templates:
+        - openstack-python3-train-jobs
     check:
       jobs:
         - openstack-tox-pep8
         - openstack-tox-py27
-        - openstack-tox-py36
         - kollacli-tox-mypy
         - kollacli-tox-functional
         - kollacli-tox-functional-py36
@@ -49,7 +50,6 @@
       jobs:
         - openstack-tox-pep8
         - openstack-tox-py27
-        - openstack-tox-py36
         - kollacli-tox-mypy
         - kollacli-tox-functional
         - kollacli-tox-functional-py36

cli_setup.py

@@ -30,7 +30,7 @@ tools = 'tools'
 
 def setup_ansible_etc():
     # if the kolla-cli directory for the inventory doesn't exist
-    # already then make it.  this will also create the directory the
+    # already then make it. this will also create the directory the
     # globals and password file goes into
     cli_etc_dir = os.path.join(kolla_ansible_etc_target,
                                kolla_cli, ansible)

setup.cfg

@@ -17,7 +17,8 @@ classifier =
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
 
 [files]
 packages =

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = pep8,mypy,functional,functional-py36,py27,py36
+envlist = py37,pep8,mypy,functional,functional-py36,py27
 
 [testenv]
 usedevelop=True