QoS specs update return value

[Eric Harney]

In db/api.py, qos_specs_update calls "IMPL.qos_specs_update()" instead of "return IMPL.qos_specs_update()".

This generates a pylint lintstack error:
["Assigning to function call which doesn't return", "res = db.qos_specs_update(context, qos_specs_id, specs)"]

This doesn't look right -- I assume the result should be returned from db.qos_specs_update.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/74997

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/74997
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=b1e7d0ad220d869323754683dbb447f6821ef705
Submitter: Jenkins
Branch: master

commit b1e7d0ad220d869323754683dbb447f6821ef705
Author: Avishay Traeger <email address hidden>
Date: Thu Feb 20 13:22:37 2014 +0200

    Ensure return for db api functions

    Functions in db/api.py should return whatever the implementation of
    those functions return. This is important for qos_specs_update which
    returns something for the sqlalchemy implementation, but for others as
    well for future implementations.

    Added 'return' for functions that were missing it.

    Change-Id: I384b1cf915b2d2238fd75d23b17558cae2cf9f50
    Closes-Bug: #1272365