Multiple db calls in some quota methods

[Liyingjun]

in nova/quota.py
db.quota_get_all_by_project is called twice in method limit_check(): https://github.com/openstack/nova/blob/master/nova/quota.py#L356 and
reserve(): https://github.com/openstack/nova/blob/master/nova/quota.py#L424

db.quota_get_all_by_project_and_user is called twice in method get_settable_quotas(): https://github.com/openstack/nova/blob/master/nova/quota.py#L272

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/71528

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/71537

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/71528
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=67582831e2171cb6bee6af53630ba6d1dc80d7bd
Submitter: Jenkins
Branch: master

commit 67582831e2171cb6bee6af53630ba6d1dc80d7bd
Author: liyingjun <email address hidden>
Date: Wed Jan 15 00:34:07 2014 +0800

    Merge same db calls for some quota methods

    db.quota_get_all_by_project is called twice in method limit_check()
    and reserve(),
    db.quota_get_all_by_project_and_user is called twice in method
    get_settable_quotas() in nova/quota.py

    Change-Id: Ie5e3a414d3d52964c16613f44fe60a7f68bc0c66
    Closes-bug: 1277068

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/71537
Committed: https://git.openstack.org/cgit/openstack/oslo-incubator/commit/?id=67864735a86c8b3fed5d0c27f51760bfb6f458bd
Submitter: Jenkins
Branch: master

commit 67864735a86c8b3fed5d0c27f51760bfb6f458bd
Author: liyingjun <email address hidden>
Date: Wed Jan 15 01:11:29 2014 +0800

    Merge same db calls for some quota methods

    self.db.quota_get_all_by_project is called twice in method limit_check()
    and reserve(),
    self.db.quota_get_all_by_project_and_user is called twice in method
    get_settable_quotas()

    Change-Id: Ibe41f49afe16c220ca663a7ad13b61acc08c7775
    Closes-bug: 1277068