Fix broken infrared toxenv on CentOS/RHEL-8

- use OpenStack uppser-constrains file for infrared toxenv
- make tobiko-tox-infrared-centos-8 job voting
- ensure setupptools and wheel versions are up to date

Change-Id: I04934b6eba6c35acf6ed2bcb9702b09a31dac8bf

bindep.txt

@@ -12,6 +12,7 @@ libffi-devel [platform:redhat]
 openssl-devel [platform:redhat]
 python3-devel [platform:redhat]
 python3-setuptools [platform:redhat]
+python3-wheel [platform:redhat]
 readline-devel [platform:redhat]
 sqlite-devel [platform:redhat]
 zlib-devel [platform:redhat]

roles/tobiko-ensure-python3/tasks/install.yaml

@@ -34,9 +34,14 @@
                                 (get_python_info.stdout | from_json)}) }}
 
 
-- name: "upgrade Pip command to latest version"
+- name: "upgrade '{{ python_command }}' packages to the latest versions"
   command: >
-    '{{ python_info[python_command].executable }}' -m pip install pip --upgrade --user
+    '{{ python_info[python_command].executable }}' -m pip install '{{ item }}' \
+      --upgrade --user
+  loop:
+    - pip
+    - setuptools
+    - wheel
 
 
 - name: "show python_info facts"

tox.ini

@@ -188,7 +188,8 @@ whitelist_externals =
     rm
 
 deps =
-    -r infrared-requirements.txt
+    -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
+    -rinfrared-requirements.txt
 passenv =
     {[testenv:venv]passenv}
     ANSIBLE_*

zuul.d/infrared.yaml

@@ -35,7 +35,7 @@
     name: tobiko-tox-infrared-centos-8
     parent: tobiko-tox-infrared
     nodeset: centos-8-2-node
-    voting: false
+    voting: true
     description: |
       Run py36 test cases using tobiko infrared plugin on CentOS 8