[repo_setup] Add version for repo_setup repo pull action

We're adding a new cifmw_repo_setup_version variable
where defaults to main but can be overriden for selecting
a version/tag of the repo to be pulled.
It accepts: branch, tags and commit SHA.
Signed-off-by: Enrique Vallespi Gil <evallesp@redhat.com>

Signed-off-by: Enrique Vallespi Gil <evallesp@redhat.com>

Author: evallesp

roles/repo_setup/README.md

@@ -19,6 +19,7 @@ using `cifmw_repo_setup_src` role default var.
 * `cifmw_repo_setup_rdo_mirror`: (String) Address from which to install RDO packages. Defaults to `{{ cifmw_repo_setup_dlrn_uri }}`.
 * `cifmw_repo_setup_os_release`: (String) Operating system release. Defaults to `{{ ansible_distribution|lower }}`.
 * `cifmw_repo_setup_src`: (String) repo-setup repository location. Defaults to `https://github.com/openstack-k8s-operators/repo-setup`.
+* `cifmw_repo_setup_version`: (string) repo-setup repository version. Takes its value from cifmw_repo_setup_version_pin (from group_vars) if define, defaults to `HEAD`.
 * `cifmw_repo_setup_output`: (String) Repository files output. Defaults to `{{ cifmw_repo_setup_basedir }}/artifacts/repositories`.
 * `cifmw_repo_setup_additional_repos`: (String) Additional repos(ceph, deps) to enable. Defaults to `''`.
 * `cifmw_repo_setup_env`: (Dict) Environment variables to be passed to repo_setup cli . Defaults to `'{}'`.

roles/repo_setup/defaults/main.yml

@@ -28,6 +28,7 @@ cifmw_repo_setup_rdo_mirror: "{{ cifmw_repo_setup_dlrn_uri }}"
 cifmw_repo_setup_os_release: "{{ ansible_distribution | lower }}"
 cifmw_repo_setup_dist_major_version: "{{ ansible_distribution_major_version }}"
 cifmw_repo_setup_src: "https://github.com/openstack-k8s-operators/repo-setup"
+cifmw_repo_setup_version: "{{ cifmw_repo_setup_version_pin | default('HEAD') }}"
 cifmw_repo_setup_output: "{{ cifmw_repo_setup_basedir }}/artifacts/repositories"
 cifmw_repo_setup_env: {}
 cifmw_repo_setup_additional_repos: ''

roles/repo_setup/tasks/install.yml

@@ -18,11 +18,12 @@
     - packages
     - bootstrap
 
-- name: Get repo-setup repository # noqa: latest[git]
+- name: Get repo-setup repository
   ansible.builtin.git:
     accept_hostkey: true
     dest: "{{ cifmw_repo_setup_basedir }}/tmp/repo-setup"
     repo: "{{ cifmw_repo_setup_src }}"
+    version: "{{ cifmw_repo_setup_version }}"
 
 - name: Initialize python venv and install requirements
   ansible.builtin.pip: