Add composite unique constraints to make sure same mon only add once  Resolves ZSTAC-4771
Add composite unique constraints to make sure same mon only add once
 Resolves ZSTAC-4771

AlanJinTS/zstack,camilesing/zstack,camilesing/zstack,zstackorg/zstack,AlanJinTS/zstack,MatheMatrix/zstack,zstackorg/zstack,AlanJager/zstack,MatheMatrix/zstack,MatheMatrix/zstack,zstackio/zstack,AlanJager/zstack,zstackio/zstack,camilesing/zstack,zstackio/zstack,AlanJinTS/zstack,AlanJager/zstack