Functional Tests and Gate stub

- Adds modifications to tox.ini to enable functional testing
- adds the functional sub directory to the tests folder
- adds .zuul file to enable the Gate to start functional testing.

Change-Id: Id40c0feba1741328027bd285e10aa8899b4a12b9

.zuul.yaml

@@ -0,0 +1,18 @@
+- project:
+    name: openstack/neutron-classifier
+    check:
+      jobs:
+        - openstack-tox-functional:
+            required-projects:
+                - openstack/neutron
+        - openstack-tox-functional-py35:
+            required-projects:
+                - openstack/neutron
+    gate:
+      jobs:
+        - openstack-tox-functional:
+            required-projects:
+                - openstack/neutron
+        - openstack-tox-functional-py35:
+            required-projects:
+                - openstack/neutron

neutron_classifier/tests/functional/requirements.txt

@@ -0,0 +1,4 @@
+# Additional requirements for functional tests
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.

neutron_classifier/tests/functional/test_placeholder.py

@@ -0,0 +1,7 @@
+from neutron_classifier.tests import base
+
+
+class PlaceholderTest(base.TestCase):
+
+    def test_noop(self):
+        pass

test-requirements.txt

@@ -4,6 +4,7 @@ python-subunit>=0.0.18  # Apache-2.0/BSD
 sphinx>=1.6.2  # BSD
 oslosphinx>=4.7.0  # Apache-2.0
 oslotest>=1.10.0  # Apache-2.0
+os-testr>=1.0.0 # Apache-2.0
 testrepository>=0.0.18  # Apache-2.0/BSD
 testscenarios>=0.4  # Apache-2.0/BSD
 testtools>=1.4.0  # MIT

tools/ostestr_compat_shim.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# preserve old behavior of using an arg as a regex when '--' is not present
+case $@ in
+  (*--*) ostestr $@;;
+  ('') ostestr;;
+  (*) ostestr --regex "$@"
+esac

tox.ini

@@ -22,6 +22,43 @@ commands =
 # TODO(igordcard): enable pylint on a future patch
 #    pylint --rcfile=.pylintrc --output-format=colorized {posargs:neutron_classifier}
 
+[testenv:dsvm]
+setenv = OS_FAIL_ON_MISSING_DEPS=1
+         OS_LOG_PATH={env:OS_LOG_PATH:/opt/stack/logs}
+
+[testenv:functional]
+setenv = {[testenv]setenv}
+         OS_TEST_TIMEOUT=180
+         OS_TEST_PATH=./neutron_classifier/tests/functional
+         OS_LOG_PATH={env:OS_LOG_PATH:/opt/stack/logs}
+deps =
+  {[testenv]deps}
+  -r{toxinidir}/neutron_classifier/tests/functional/requirements.txt
+commands =
+  {toxinidir}/tools/ostestr_compat_shim.sh {posargs}
+
+[testenv:functional-py35]
+basepython = python3.5
+setenv = {[testenv]setenv}
+         OS_TEST_TIMEOUT=180
+         OS_TEST_PATH=./neutron_classifier/tests/functional
+         OS_LOG_PATH={env:OS_LOG_PATH:/opt/stack/logs}
+deps =
+  {[testenv]deps}
+  -r{toxinidir}/neutron_classifier/tests/functional/requirements.txt
+commands =
+  {toxinidir}/tools/ostestr_compat_shim.sh {posargs}
+
+[testenv:dsvm-functional]
+basepython = python2.7
+setenv = {[testenv:functional]setenv}
+         {[testenv:dsvm]setenv}
+sitepackages=True
+deps =
+  {[testenv:functional]deps}
+commands =
+  {toxinidir}/tools/ostestr_compat_shim.sh {posargs}
+
 [testenv:venv]
 commands = {posargs}