Add fips job for refstack-client

The patch also removes tasks responsible for installing
python3-virtualenv package - virtualenv module is part of
python3, therefore there is no need to install it.

Change-Id: If0fcf61e2dbab88601fd68efb1d10eed6888f8d8

.zuul.yaml

@@ -4,6 +4,7 @@
       jobs:
         - openstack-tox-linters
         - refstack-client-devstack-master
+        - refstack-client-devstack-master-fips-centos9
         - refstack-client-devstack-2023-1
         - refstack-client-devstack-zed
         - refstack-client-devstack-yoga
@@ -78,6 +79,16 @@
     irrelevant-files:
       - ^.*\.md$
 
+- job:
+    name: refstack-client-devstack-master-fips-centos9
+    parent: refstack-client-devstack-master
+    description: A job for refstack-client on a devstack environment with fips enabled
+    nodeset: devstack-single-node-centos-9-stream
+    vars:
+      configure_swap_size: 4096
+      nslookup_target: 'opendev.org'
+      enable_fips: true
+
 - job:
     name: refstack-client-devstack-2023-1
     parent: refstack-client-devstack-master

tasks/install-packages.yaml

@@ -9,15 +9,3 @@
   become: true
   ansible.builtin.package:
     name: git
-
-- name: Install virtualenv (py3)
-  become: true
-  ansible.builtin.package:
-    name: python3-virtualenv
-  when: not python3_is_available.failed
-
-- name: Check if pip is already installed
-  ansible.builtin.command: "pip --version"
-  ignore_errors: true
-  register: pip_is_installed
-  when: python3_is_available.failed