* Alerting: Fix contact point testing with secure settings (#72235)
Fixes double encryption of secure settings during contact point testing and removes code duplication
that helped cause the drift between alertmanager and test endpoint. Also adds integration tests to cover
the regression.
Note: provisioningStore is created to remove cycle and the unnecessary dependency.
(cherry picked from commit d31d175109)
Integration tests
This directory contains Grafana server integration tests.