Run functional tests on Python 3

The functional job roles are extended with an option to specify
python version to run with and a new CI job is created.
python-memcached is added to requirements.txt, since it is used in
the default keystonemiddleware configuration.

Change-Id: I0b77b150785a90b411cba4ffc4b89cc67646e2ac

.zuul.yaml

@@ -3,6 +3,8 @@
       jobs:
         - novajoin-functional:
             voting: false
+        - novajoin-functional-py3:
+            voting: false
 
 - job:
     name: novajoin-functional
@@ -39,3 +41,14 @@
           # Disable Cinder services
           c-bak: false
           c-vol: false
+
+- job:
+    name: novajoin-functional-py3
+    description: |
+      Run functional tests under Python 3.
+    parent: novajoin-functional
+    nodeset: devstack-single-node-fedora-latest
+    vars:
+      tox_envlist: functional-py3
+      bindep_profile: test py3
+      python_version: 3

bindep.txt

@@ -3,3 +3,6 @@
 
 python-ipalib
 python-ipaclient
+
+python3-ipalib [py3]
+python3-ipaclient [py3]

requirements.txt

@@ -7,6 +7,7 @@ Paste>=2.0.2 # MIT
 Routes>=2.3.1 # MIT
 six>=1.10.0 # MIT
 python-keystoneclient>=3.8.0 # Apache-2.0
+python-memcached>=1.59 # PSF
 keystoneauth1>=3.3.0 # Apache-2.0
 oslo.concurrency>=3.25.0 # Apache-2.0
 oslo.config>=6.1.0 # Apache-2.0

roles/configure-freeipa/tasks/main.yaml

@@ -21,6 +21,7 @@
     name: urllib3
     state: absent
   become: true
+  when: python_version is not defined
 
 - name: Install FreeIPA
   package:
@@ -35,6 +36,7 @@
   check_mode: true
   ignore_errors: yes
   register: mod_nss_check
+  become: true
 
 - name: Remove mod_ssl config which conflicts with FreeIPA
   file:

roles/configure-novajoin/tasks/main.yaml

@@ -1,10 +1,16 @@
 - name: Build novajoin
-  command: python setup.py build
+  command: python{{ python_version|default('') }} setup.py build
   args:
     chdir: '{{ zuul.project.src_dir }}'
 
+- name: Install novajoin requirements
+  command: python{{ python_version|default('') }} -m pip install -r requirements.txt
+  args:
+    chdir: '{{ zuul.project.src_dir }}'
+  become: true
+
 - name: Install novajoin
-  command: python setup.py install
+  command: python{{ python_version|default('') }} setup.py install
   args:
     chdir: '{{ zuul.project.src_dir }}'
   become: true

tox.ini

@@ -76,3 +76,13 @@ setenv =
 commands =
     /usr/bin/find . -type f -name "*.py[c|o]" -delete
     stestr run --slowest {posargs}
+
+[testenv:functional-py3]
+basepython = python3
+sitepackages = true
+deps = -r{toxinidir}/test-requirements.txt
+setenv =
+    OS_TEST_PATH={toxinidir}/novajoin/tests/functional
+commands =
+    /usr/bin/find . -type f -name "*.py[c|o]" -delete
+    stestr run --slowest {posargs}