Add staging stage to CI/CD

Edit the gitlab-ci.yml file again and add a stage of staging to the stages section so that it looks like the following:

stages:
  - registry
  - container
  - info
  - test
  - staging

Next add the following staging definition to the end of the file:

config_stage:
  stage: staging
  rules:
    - if: '$CI_COMMIT_BRANCH == "main"'
      when: manual
  image: ${CI_REGISTRY}/${CI_PROJECT_PATH}/ansible:latest
  tags:
    - ansible_f5
  dependencies:
    - test_code
  variables:
    ANSIBLE_HOST_KEY_CHECKING: "False"
  allow_failure: false
  script:
    - echo $ANSIBLE_VAULT_PASSWORD > vault_passwd
    - ansible-galaxy collection list
    - ansible-playbook -i inventories/staging/ --vault-password-file vault_passwd bigip-node.yml
    - ansible-playbook -i inventories/staging/ --vault-password-file vault_passwd bigip-pool.yml
    - ansible-playbook -i inventories/staging/ --vault-password-file vault_passwd bigip-pool-members.yml
    - ansible-playbook -i inventories/staging/ --vault-password-file vault_passwd bigip-irule.yml
    - ansible-playbook -i inventories/staging/ --vault-password-file vault_passwd bigip-virtual-server.yml
    - ansible-playbook -i inventories/staging/ --vault-password-file vault_passwd bigip-config.yml

Commit the changes.