Missing integration tests

[minherz]

Note This issue is a dynamically maintained list of integration tests that are currently missing. It will be closed after all items in the list are checked.

• [ ] Validate custom monitoring dashboard(s) with charts -- test that a custom dashboard was created and it contains the charts with "matching" configurations (TBD: what "matching" exactly means)
• [ ] Validate log-based metric exists
• [ ] Validate uptime check exists
• [ ] Validate alert exists
• [ ] Validate SLO exists
• [ ] Validate notification channel with expected name and type exists