secgroups: enable delete_default_rules
Neutron will always inject a set of default security group rules when creating a security group.
We wont be able to fully track the security group rules in tofu-infra unless we delete them, which conveniently the tofy openstack provider allows.
This means that the default sg rules (like, allow egress) should be included in the security group YAML we have in this repo, which is exactly what we wanted in the first place.
Bug: T375111 Signed-off-by: Arturo Borrero Gonzalez aborrero@wikimedia.org