* Add to available channels
* Export
* Fix bug in deeply nested secrets
BE: Slice re-use bug when traversing deeply.
FE: Only at most one level of nesting was being taken into account
when determining secureFields keys. This change adds a new field on
NotificationChannelOption: secureFieldKey. This is populated on API GET via
transform. This change gives us the option to hardcode secureFieldKey in the
backend and no longer calculate the key via settings topology.
* Update grafana/alerting to 3e20fda3b872
* Prettier
* Linting
* Fix IntegrationConfig test to catch secure field mismatch
Matthew Jacobson
0016b57486