Security group rule quota is not working well with default security group rule.

[Kyuyeong Lee]

OpenStack Version: 2023.2

How to reproduce :
1. Remove all of default-security-group-rules.
2. Create a new project and set the quota of security-group-rules to 5.
3. Create a new security-group, and create 4 security-group-rules in this security-group.
4. Create another new security-group.

Expected :
At step 4, the security-group will be created without any security-group-rules since I removed all of default-security-group-rules at step 1.
There will be no problem with the security-group-rules quota. (I have 4 rules, and the quota is 5.)

Actual :
Failed to create the security-group at step 4 with the message below.
- Error: Unable to create security group: %s Details
- Quota exceeded for resources: ['security_group_rule'].

It seems the security-group-rules quota validation logic in the security group creation code has to be modified.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/921909