Add automatic cleanup of OpenStack CI VMs (#5760)

.gitlab-ci/terraform.yml

@@ -104,6 +104,16 @@ tf-validate-aws:
   OS_INTERFACE: public
   OS_IDENTITY_API_VERSION: "3"
 
+tf-ovh_cleanup:
+  stage: unit-tests
+  image: python
+  variables:
+    <<: *ovh_variables
+  before_script:
+    - pip install -r scripts/openstack-cleanup/requirements.txt
+  script:
+    - ./scripts/openstack-cleanup/main.py
+
 tf-ovh_ubuntu18-calico:
   extends: .terraform_apply
   when: on_success