Start testing environment

• Add start and halt testing environment Ansible playbook
• Add test CI stage

.gitlab-ci.yml

 default:
   tags:
-    - lab
-    - shell
+    - ovh
 
 stages:
   - default_validate
@@ -22,7 +21,6 @@ build-job:       # This job runs in the build stage, which runs first.
 run-test:
   stage: test
   before_script:
-    - echo "$TESTING_HOSTS"
     - env ANSIBLE_HOST_KEY_CHECKING=false ANSIBLE_PRIVATE_KEY_FILE="$ANSIBLE_PRIVATE_KEY_FILE" ansible-playbook -i "$TESTING_HOSTS" ansible/deploy_on_test.yml
   script: echo "testing"
   after_script: