the method _add_to_threadpool is defined repated

[wuyuting]

The method _add_to_threadpool is defined repeated in both cinder.volume.Manager Class and cinder.manager.SchedulerDependentManager Class. Actually, SchedulerDependentManager is the parent class of Manager. Therefore， there's no need to redefine the method again.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/324278

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/324278
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=b47ca6377e77e409448e58fe0350241dae6ff181
Submitter: Jenkins
Branch: master

commit b47ca6377e77e409448e58fe0350241dae6ff181
Author: wuyuting <email address hidden>
Date: Thu Jun 2 03:48:13 2016 -0400

    Remove the duplicated definition of _add_to_threadpool

    Method _add_to_threadpool is defined repeated in both cinder.volume.Manager
    class and cinder.manager.SchedulerDependentManager class. Actually,
    SchedulerDependentManager is the parent class of Manager. Therefore,
    there's no need to redefine the method again. This patch removes the
    duplicated definition of the method in cinder.volume.Manager.

    Change-Id: I809fbd2dd8704cce1e2e3eb0c419740ee549b0a6
    Closes-Bug: #1588200

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/cinder 9.0.0.0b2 development milestone.