add comments

weed/filer/etcd/etcd_store_test.go

@@ -6,7 +6,7 @@ import (
 )
 
 func TestStore(t *testing.T) {
-	if false {
+	if false { // turn on the testing when local env is set up
 		store := &EtcdStore{}
 		store.initialize("localhost:2379", "3s")
 		store_test.TestFilerStore(t, store)