The way to change those values is thru the OSC,:

$ openstack project list
+----------------------------------+--------------------+
| ID                               | Name               |
+----------------------------------+--------------------+
| 49f3e83f85354ee3a0abadcf1e35c9f4 | demo               |
| 5a46e724e04d41beaf365d7148f8f465 | invisible_to_admin |
| 6ebf8c5aadea49fdb6222eae1e1639c0 | admin              |
| 82533c3679a747189c401d42345f75b2 | service            |
| a0c776bc0aa645a6845cd7919512ed01 | alt_demo           |
+----------------------------------+--------------------+

$ openstack quota set --secgroups 15 49f3e83f85354ee3a0abadcf1e35c9f4

$ openstack quota show 49f3e83f85354ee3a0abadcf1e35c9f4
+-----------------------+----------------------------------+
| Field                 | Value                            |
+-----------------------+----------------------------------+
| backup-gigabytes      | 1000                             |
| backups               | 10                               |
| cores                 | 20                               |
| fixed-ips             | -1                               |
| floating-ips          | 50                               |
| gigabytes             | 1000                             |
| gigabytes_lvmdriver-1 | -1                               |
| health_monitors       | None                             |
| injected-file-size    | 10240                            |
| injected-files        | 5                                |
| injected-path-size    | 255                              |
| instances             | 10                               |
| key-pairs             | 100                              |
| l7_policies           | None                             |
| listeners             | None                             |
| load_balancers        | None                             |
| location              | None                             |
| name                  | None                             |
| networks              | 10                               |
| per-volume-gigabytes  | -1                               |
| pools                 | None                             |
| ports                 | 50                               |
| project               | 49f3e83f85354ee3a0abadcf1e35c9f4 |
| project_id            | None                             |
| properties            | 128                              |
| ram                   | 51200                            |
| rbac_policies         | 10                               |
| routers               | 10                               |
| secgroup-rules        | 100                              |
| secgroups             | 15                               |
| server-group-members  | 10                               |
| server-groups         | 10                               |
| snapshots             | 10                               |
| snapshots_lvmdriver-1 | -1                               |
| subnet_pools          | -1                               |
| subnets               | 10                               |
| volumes               | 10                               |
| volumes_lvmdriver-1   | -1                               |
+-----------------------+----------------------------------+

By other hand, python-neutronclient is under a process to be deprecated. Therefore,  I'm gonna invalidate this bug.