Add connection from apier to scheduler for tutinternal config

data/conf/samples/tutinternal/cgrates.json

@@ -118,4 +118,9 @@
 },
 
 
+	"apier": {
+		"scheduler_conns": [					// connections to SchedulerS for reloads
+			{"address": "*internal"},
+		],
+	},
 }

engine/datamanager.go

@@ -1429,3 +1429,7 @@ func (dm *DataManager) Reconnect(marshaler string, newcfg *config.DataDbCfg) (er
 	dm.dataDB = d
 	return
 }
+
+func (dm *DataManager) Preload(items []string) error {
+
+}

engine/storage_interface.go

@@ -136,9 +136,6 @@ type DataDB interface {
 	RemoveDispatcherHostDrv(string, string) error
 }
 
-type DataDBPreload interface {
-}
-
 type StorDB interface {
 	CdrStorage
 	LoadReader