[v10.0.x] Service accounts: API key migration refactoring to parse as json object of the results (#69776)

Service accounts: API key migration refactoring to parse as json object of the results (#69771)

refactoring to parse as json object of the results

(cherry picked from commit 5dceb5dff3)

Co-authored-by: Eric Leijonmarck <eric.leijonmarck@gmail.com>

pkg/services/serviceaccounts/models.go

@@ -38,11 +38,11 @@ var (
 )
 
 type MigrationResult struct {
-	Total           int
-	Migrated        int
-	Failed          int
-	FailedApikeyIDs []int64
-	FailedDetails   []string
+	Total           int      `json:"total"`
+	Migrated        int      `json:"migrated"`
+	Failed          int      `json:"failed"`
+	FailedApikeyIDs []int64  `json:"failedApikeyIDs"`
+	FailedDetails   []string `json:"failedDetails"`
 }
 
 type ServiceAccount struct {