Comment 0 for bug 1533687

The records in quotausages table for floatingip are not updated immediately after delete some (or all) floatingips.
For example, if we set quota for floatingip to 5, create 5 floatingips and remove all of them, after that we can't create new floatingip:
The error "Quota exceeded for resources: ['floatingip']." occurs.
And at this time in mysql db we can see following:
mysql> select * from quotausages;
+----------------------------------+------------+-------+--------+----------+
| tenant_id | resource | dirty | in_use | reserved |
+----------------------------------+------------+-------+--------+----------+
| fae4b729e0d543199331d6be300074fc | floatingip | 0 | 5 | 0 |
| fae4b729e0d543199331d6be300074fc | network | 0 | 1 | 0 |
+----------------------------------+------------+-------+--------+----------+

Steps to reproduce:
1. $ neutron quota-update --floatingip 5
2. $ for i in $(seq 1 5); do neutron floatingip-create public; done
3. Try to create another one floatingip (should not be created):
$ neutron floatingip-create public
Quota exceeded for resources: ['floatingip'].
4. $ for ip in $(neutron floatingip-list -f csv -c id --quote=none | grep -v id); do neutron floatingip-delete $ip done
5. Try to create another one floatingip:
$ neutron floatingip-create public
Quota exceeded for resources: ['floatingip'].
6. Check quotas info in db:
mysql> use neutron
mysql> select * from quotausages;

Full log here: http://paste.openstack.org/show/483767/