move model freeze to AbstractModule (#1647)

* move model freeze to container

* update

* update freeze API

* refactor freeze API

* meet code review and add unit test

* fix doc

* meet code review
This commit is contained in:
Xianyan 2017-10-16 11:28:35 +08:00 committed by Ian Wong
parent cd9c7b6cf7
commit f4ccc9f754

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