No valid check on cinder quota class hard_limit value

[ling-yun]

Cinder quota class hard_limit’s value doesn’t do a valid check, which can be set to value less than -1.
Test steps as follow:
1.tenantA’s quota class info
root@ubuntu:/opt/stack/tempest# cinder quota-class-show aa2d79d43e884aa7ae498768d98731e5
+-----------+-------+
| Property | Value |
+-----------+-------+
| gigabytes | 1000 |
| snapshots | 10 |
| volumes | 10 |
+-----------+-------+
2.Upadte tenantA’s class info
1)request
http://10.250.10.171:8776/v2/aa2d79d43e884aa7ae498768d98731e5/os-quota-class-sets/aa2d79d43e884aa7ae498768d98731e5
{
    "quota_class_set":{
    "volumes":-11111
 }
}
2)Reponse
{"quota_class_set": {"gigabytes": 1000, "volumes": -11111, "snapshots": 10}}
3.Result check: tenantA’s quota class hard_limit value is set to -111.
root@ubuntu:/opt/stack/tempest# cinder quota-class-show aa2d79d43e884aa7ae498768d98731e5
+-----------+--------+
| Property | Value |
+-----------+--------+
| gigabytes | 1000 |
| snapshots | 10 |
| volumes | -11111 |
+-----------+--------+

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/54068

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/54068
Committed: http://github.com/openstack/cinder/commit/8b6d51ea04a65d846b0e92a11e191327360d7427
Submitter: Jenkins
Branch: master

commit 8b6d51ea04a65d846b0e92a11e191327360d7427
Author: ling-yun <email address hidden>
Date: Mon Oct 28 15:38:35 2013 +0800

    Add valid check and unit tests on quota class

    1.Cinder quota class hard_limit’s value should larger than -1 (-1 is a flag
    value for unlimited).
    2.Add unit tests for quota class.

    Closes-bug: #1245360

    Change-Id: Ie483db1bdbd4fac875de26abab8ebebd96f4938b

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/havana
Review: https://review.openstack.org/64081

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/64081
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=07892b1738cae49b709cbb7e4657dd29751d8c6d
Submitter: Jenkins
Branch: stable/havana

commit 07892b1738cae49b709cbb7e4657dd29751d8c6d
Author: ling-yun <email address hidden>
Date: Mon Oct 28 15:38:35 2013 +0800

    Add valid check and unit tests on quota class

    1.Cinder quota class hard_limit’s value should larger than -1 (-1 is a flag
    value for unlimited).
    2.Add unit tests for quota class.
    3.Add quota_classes extension enabled in unitest, so as to do
    unitest for quota_classes' update operation.

    Closes-bug: #1245360

    Change-Id: Ie483db1bdbd4fac875de26abab8ebebd96f4938b
    (cherry picked from commit 8b6d51ea04a65d846b0e92a11e191327360d7427)