refacotr(sync): add case sync2-test.sim

tests/script/tsim/sync/sync2-test.sim

@@ -112,12 +112,18 @@ endi
 
 
 
-return 0
 
 vg_ready:
 print ====>  create stable/child table
 sql create table stb (ts timestamp, c1 int, c2 float, c3 double) tags (t1 int)
 
+
+
+
+return 0
+
+
+
 sql show stables
 if $rows != 1 then 
   return -1