Add untagged template file to allow running in shared runners

approvals_template_v2.yml

+approval:
+  stage: .pre
+  script:
+    - apt-get update && apt-get install jq curl -y
+    - export MR_ID=$(curl -s "${GITLAB_API_URL}/projects/${CI_PROJECT_ID}/merge_requests?private_token=${GITLAB_API_TOKEN}&state=opened" | jq -r ".[]|select(.sha == \"$CI_COMMIT_SHA\")|.iid")
+    - curl -X POST -H "Content-Type:application/json" --data '{"body":"Request for an approver to code review and resolve this thread to enable merging."}' ${GITLAB_API_URL}/projects/${CI_PROJECT_ID}/merge_requests/{$MR_ID}/discussions?private_token=${GITLAB_API_TOKEN}
+  only:
+    - merge_requests