if the bizScenarioUniqueIdentity is "ali.tmall.supermarket"
the search path is as below:
1、first try to get extension by "ali.tmall.supermarket", if get, return it.
2、loop try to get extension by "ali.tmall", if get, return it.
3、loop try to get extension by "ali", if get, return it.
4、if not found, try the default extension