feat(alerting): renames alert table to alert_rule

pkg/services/sqlstore/migrations/alert_mig.go

@@ -3,10 +3,8 @@ package migrations
 import . "github.com/grafana/grafana/pkg/services/sqlstore/migrator"
 
 func addAlertMigrations(mg *Migrator) {
-	mg.AddMigration("Drop old table alert table", NewDropTableMigration("alert"))
-
 	alertV1 := Table{
-		Name: "alert",
+		Name: "alert_rule",
 		Columns: []*Column{
 			{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
 			{Name: "dashboard_id", Type: DB_BigInt, Nullable: false},
@@ -25,4 +23,16 @@ func addAlertMigrations(mg *Migrator) {
 
 	// create table
 	mg.AddMigration("create alert table v1", NewAddTableMigration(alertV1))
+
+	alert_changes := Table{
+		Name: "alert_rule_updates",
+		Columns: []*Column{
+			{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
+			{Name: "alert_id", Type: DB_BigInt, Nullable: false},
+			{Name: "org_id", Type: DB_BigInt, Nullable: false},
+			{Name: "created", Type: DB_DateTime, Nullable: false},
+		},
+	}
+
+	mg.AddMigration("create alert_rules_updates table v1", NewAddTableMigration(alert_changes))
 }