Prometheus: Add support for cloud partners Prometheus data sources (#103482)

* wip

* Add prom flavor support for data source variables and export/import dashboards (#103321)

* add dashboard and data source var selection

* use match plugin id instead

* use updated matchpluginid

* formatting

* cleanup

* regex anchor

* update error msg

* Alerting: Clean up prometheus-flavored types and functions (#103703)

* clean up types and utility functions for dealing with
prometheus-flavored data sources

* Refactor alerting datasource types to use constants as source of truth

* Alerting: Clean up prometheus-flavored types and functions on the bac… (#103716)

Alerting: Clean up prometheus-flavored types and functions on the backend

* add matchPluginId tests

* Update matchPluginId func to bidirectional (#103746)

* update matchpluginid func to bidirectional

* lint

* formatting

* use actual isSupportedExternalRulesSourceType in test

* add tests in datasource_srv

* betterer

* remove type assertion

* remove unnecessary case

* use satisifies to not have to convert tuple to an array of string

* add prometheus_flavor test

---------

Co-authored-by: Andrew Hackmann <5140848+bossinc@users.noreply.github.com>
Co-authored-by: Gilles De Mey <gilles.de.mey@gmail.com>
Co-authored-by: Alexander Akhmetov <me@alx.cx>

pkg/services/datasources/service/datasource_test.go

@@ -1000,6 +1000,11 @@ func TestService_awsServiceNamespace(t *testing.T) {
 			givenDs:   datasources.DS_PROMETHEUS,
 			givenJson: `{ "sigV4Auth": true, "serverless": true }`,
 			want:      "aps",
+		}, {
+			desc:      "amazon prometheus",
+			givenDs:   datasources.DS_AMAZON_PROMETHEUS,
+			givenJson: `{ "sigV4Auth": true }`,
+			want:      "aps",
 		}, {
 			desc:      "alertmanager",
 			givenDs:   datasources.DS_ALERTMANAGER,
@@ -1011,6 +1016,12 @@ func TestService_awsServiceNamespace(t *testing.T) {
 			givenJson: `{ "sigV4Auth": true, "serverless": true }`,
 			want:      "aps",
 			panic:     true,
+		}, {
+			desc:      "azure prometheus",
+			givenDs:   datasources.DS_AZURE_PROMETHEUS,
+			givenJson: `{ "sigV4Auth": true }`,
+			want:      "aps",
+			panic:     true,
 		},
 	}
 	for _, tc := range testCases {