Prometheus data source: Migration service (#107364)

* copying from secrets migration

* service runs and mig promds type

* creating data source check

* adding aws

* split into azure/aws service. feature flag. auto install

* add tests

* clean up

* lint

* add code owner

* imporvments from andres

* remove prom mig from http_server

* remove interface for testing

* add prom mig to provisining data sources so prov happens before mig

* fit into prov

* comment

* log debug instead of returning in update type

* Trigger Build

* feature flag being weird

* not public method

* copying from secrets migration

* service runs and mig promds type

* creating data source check

* adding aws

* add tests

* clean up

* imporvments from andres

* remove prom mig from http_server

* remove interface for testing

* add prom mig to provisining data sources so prov happens before mig

* fit into prov

* Trigger Build

* not public method

* remove logger import

.github/CODEOWNERS

@@ -1137,6 +1137,8 @@ eslint-suppressions.json @grafanabot
 # Feature toggles
 /pkg/services/featuremgmt/ @grafana/grafana-backend-services-squad
 
+# Data source migrations
+/pkg/services/promtypemigration/ @grafana/partner-datasources @grafana/aws-datasources
 
 # Kind definitions
 /kinds/dashboard @grafana/dashboards-squad