Azure: get custom cloud list from grafana-azure-sdk-go package (#86717)

* Get custom cloud list from grafana-azure-sdk-go for frontend settings

* Remove getAzureClouds() and call CustomClouds() directly

* remove unused type

pkg/api/dtos/frontend_settings.go

@@ -1,6 +1,7 @@
 package dtos
 
 import (
+	"github.com/grafana/grafana-azure-sdk-go/v2/azsettings"
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/setting"
 )
@@ -65,11 +66,12 @@ type FrontendSettingsLicenseInfoDTO struct {
 }
 
 type FrontendSettingsAzureDTO struct {
-	Cloud                                  string `json:"cloud"`
-	ManagedIdentityEnabled                 bool   `json:"managedIdentityEnabled"`
-	WorkloadIdentityEnabled                bool   `json:"workloadIdentityEnabled"`
-	UserIdentityEnabled                    bool   `json:"userIdentityEnabled"`
-	UserIdentityFallbackCredentialsEnabled bool   `json:"userIdentityFallbackCredentialsEnabled"`
+	Cloud                                  string                      `json:"cloud"`
+	Clouds                                 []azsettings.AzureCloudInfo `json:"clouds"`
+	ManagedIdentityEnabled                 bool                        `json:"managedIdentityEnabled"`
+	WorkloadIdentityEnabled                bool                        `json:"workloadIdentityEnabled"`
+	UserIdentityEnabled                    bool                        `json:"userIdentityEnabled"`
+	UserIdentityFallbackCredentialsEnabled bool                        `json:"userIdentityFallbackCredentialsEnabled"`
 }
 
 type FrontendSettingsCachingDTO struct {

pkg/api/frontendsettings.go

@@ -270,6 +270,7 @@ func (hs *HTTPServer) getFrontendSettings(c *contextmodel.ReqContext) (*dtos.Fro
 
 		Azure: dtos.FrontendSettingsAzureDTO{
 			Cloud:                                  hs.Cfg.Azure.Cloud,
+			Clouds:                                 hs.Cfg.Azure.CustomClouds(),
 			ManagedIdentityEnabled:                 hs.Cfg.Azure.ManagedIdentityEnabled,
 			WorkloadIdentityEnabled:                hs.Cfg.Azure.WorkloadIdentityEnabled,
 			UserIdentityEnabled:                    hs.Cfg.Azure.UserIdentityEnabled,