the headroom infomation is wrong in the method of limit_check

[zhangtralon]

If multiple resources beyond the quotas , the headroom information about the resources beyond the quotas is incomplete(quota.py).
for example:
If the lens of path and content of the injected files exceed the limits, the above situation will appear.
2014-06-27 12:14:04.241 4547 INFO nova.quota [req-a94185e5-779f-4455-ba45-230eb70fb774 None] overs: ['injected_file_content_bytes', 'injected_file_path_bytes']
2014-06-27 12:14:04.241 4547 INFO nova.quota [req-a94185e5-779f-4455-ba45-230eb70fb774 None] headroom: {'injected_file_path_bytes': 255}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/103297

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/103310

[OpenStack Infra (hudson-openstack)]

Change abandoned by zhangtralon (<email address hidden>) on branch: master
Review: https://review.openstack.org/103297
Reason: submit another patch

[OpenStack Infra (hudson-openstack)]

Change abandoned by zhangtralon (<email address hidden>) on branch: master
Review: https://review.openstack.org/103310
Reason: This patch depends on an abandoned patch,so I will summit another patch to resolve this problem.

[OpenStack Infra (hudson-openstack)]

Change abandoned by zhangtralon (<email address hidden>) on branch: master
Review: https://review.openstack.org/103297
Reason: This patch depends on an abandoned patch,so I will summit another patch to resolve this problem.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/104435

[Sean Dague (sdague)]

This is actually a pretty nice cleanup

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/104435
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=d7d4ef350c971c442954d772b639f8b673630896
Submitter: Jenkins
Branch: master

commit d7d4ef350c971c442954d772b639f8b673630896
Author: zhangtralon <email address hidden>
Date: Thu Jul 3 11:45:40 2014 +0800

    the headroom infomation is incomplete

    If multiple resources beyond the quotas in 'limit_check' from
    nova/quota.py. The headroom information about the resources
    beyond the quotas in OverQuota Exception is incomplete.

    Change-Id: I790c22e3618a3558dfad64bf46e37e4e49f6385e
    Closes-Bug: #1334965