Add playbook to deploy standalone on virthost

Depends-On: https://review.opendev.org/#/c/744113/
Partial-Bug: #1889219
Change-Id: I67d37134372f9d71e4a5fc82740051b98cfdf3e1

playbooks/quickstart-extras-standalone.yml

@@ -0,0 +1,94 @@
+---
+- include: quickstart.yml
+
+# setup for the undercloud
+- name: Prepare the node for installation
+  hosts: undercloud
+  gather_facts: false
+  tags:
+    - standalone
+  roles:
+    - undercloud-setup
+
+- name: Add remove ens3 if not required
+  hosts: undercloud
+  gather_facts: true
+  tasks:
+    - include_role:
+        name: baremetal-prep-virthost
+        tasks_from: remove_ens3.yml
+      when:
+        - ansible_distribution == 'CentOS'
+        - ansible_distribution_major_version|int >= 8
+
+- name: Gather facts
+  hosts: undercloud
+  become: false
+  tags:
+    - standalone
+  tasks:
+    - name: Ensure all facts are gathered
+      setup:
+
+# Deploy the standalone
+- name: Deploy the standalone
+  hosts: undercloud
+  gather_facts: true
+  tags:
+    - standalone
+  roles:
+    - standalone
+
+- name: Validate the undercloud
+  hosts: undercloud
+  gather_facts: false
+  roles:
+    - {role: validate-services, when: validate_services|default(false)|bool}
+    - {role: validate-tempest, when: run_tempest|bool}
+  tags:
+    - standalone
+
+- name: Setup virtualenv
+  hosts: undercloud
+  tasks:
+    - name: set python_cmd
+      set_fact:
+        python_cmd: "python{{ ansible_python.version.major }}"
+        cacheable: true
+      when: python_cmd is not defined
+
+    - name: Check if virtualenv is in the system
+      command: "{{ python_cmd }} -m virtualenv --version"
+      register: virtualenv_exist
+      failed_when: false
+      changed_when: false
+
+    - when: virtualenv_exist.rc != 0
+      name: Install virtualenv
+      become: true
+      package:
+        state: present
+        name: >
+            {% if ansible_python.version.major == 3 %}
+            python3-virtualenv
+            {% else %}
+            python-virtualenv
+            {% endif %}
+
+- name: Validate the deployment
+  hosts: undercloud
+  # Note(chkumar246): Moved the os_tempest related var at the top
+  # of play level in order to have scope for the whole of the play
+  # https://bugs.launchpad.net/tripleo/+bug/1838496
+
+  vars:
+    tempest_install_method: distro
+    tempest_cloud_name: 'standalone'
+  tasks:
+    - include_tasks: tempest.yml
+      when:
+        - not run_tempest|bool
+        - use_os_tempest is defined
+        - use_os_tempest|bool
+  tags:
+    - standalone