Hide Thanos link when Mimir datasource ID is present
- Updated Slack Alertmanager temlate to hide Thanos link when Mimir datasource ID is present
- Updated Slack Alertmanager temlate to show runbook_url annotation when it is present
As part of gitlab-com/gl-infra/scalability#3447 (comment 1887813133)
Edited by Taliesin Millhouse