Switch hardening to integrated tests

We aim to decrease usage of the tests repo as much as we can, so we
are switching roles to the tests completed by integrated repo.

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/792639
Change-Id: Ice89ada6e009d3aaaff5fa261c7b9cf23216f159

examples/playbook.yml

@@ -0,0 +1,17 @@
+---
+- name: Gather security hardening facts
+  hosts: "{{ security_host_group|default('hosts') }}"
+  gather_facts: True
+  tags:
+    - always
+
+- name: Apply security hardening configurations
+  hosts: "{{ security_host_group|default('hosts') }}"
+  gather_facts: false
+  user: root
+  roles:
+    - role: "ansible-hardening"
+      when: apply_security_hardening | default(True) | bool
+  environment: "{{ deployment_environment_variables | default({}) }}"
+  tags:
+    - security

zuul.d/project.yaml

@@ -14,7 +14,8 @@
 
 - project:
     templates:
-      - openstack-ansible-role-jobs
+      - openstack-ansible-linters-jobs
+      - openstack-ansible-deploy-hosts_metal-jobs
       - check-requirements
       - publish-openstack-docs-pti
       - release-notes-jobs-python3