Comment 5 for bug 1473924

Reviewed: https://review.openstack.org/206777
Committed: https://git.openstack.org/cgit/openstack/congress/commit/?id=b50388d38b58cf315e41ed24886e11ef9a0bfcae
Submitter: Jenkins
Branch: master

commit b50388d38b58cf315e41ed24886e11ef9a0bfcae
Author: Rui Chen <email address hidden>
Date: Tue Jul 28 15:58:09 2015 +0800

    Add update_state in DataSourceDriver

    Implements common logic about updating state in
    DataSourceDriver class, and call it in decorator
    @check_raw_data_changed_and_update_state in order
    to help the subclass datasource drivers to update
    self.state automatically when they use the decorator.

    Change-Id: Ib296ad0f32a2cb924e27d036eb0e644e00bfdc16
    Partial-Bug: #1473924