Merge "Add some state change functions in db.py."
authorYujun Zhang <zhang.yujunz@zte.com.cn>
Wed, 24 Aug 2016 00:59:18 +0000 (00:59 +0000)
committerGerrit Code Review <gerrit@172.30.200.206>
Wed, 24 Aug 2016 00:59:18 +0000 (00:59 +0000)

Trivial merge