MM-31391: Add max connection idle timeout to config (#16792)

* Update config.go

* Update telemetry.go

* Update store and store test

* Update settings.go

* use new error code

* Trigger CI

Co-authored-by: Haardik Dharma <dharmahaardik08@gmail.com>

store/sqlstore/store.go

@@ -268,6 +268,7 @@ func setupConnection(con_type string, dataSource string, settings *model.SqlSett
 	db.SetMaxIdleConns(*settings.MaxIdleConns)
 	db.SetMaxOpenConns(*settings.MaxOpenConns)
 	db.SetConnMaxLifetime(time.Duration(*settings.ConnMaxLifetimeMilliseconds) * time.Millisecond)
+	db.SetConnMaxIdleTime(time.Duration(*settings.ConnMaxIdleTimeMilliseconds) * time.Millisecond)
 
 	var dbmap *gorp.DbMap