create-and-list-ports.json:No more IP addresses available on network

[longling zhang]

When running a neutron create_and_list_ports.All ports will be created in one network of the tenant,so it will bring the error "No more IP addresses available on network".
Input task is:
{
    "NeutronNetworks.create_and_list_ports": [
        {
            "args": {
                "network_create_args": {},
                "port_create_args": {},
                "ports_per_network": 10
            },
            "runner": {
                "type": "constant",
                "times": 100,
                "concurrency": 10
            },
            "context": {
                "network": {},
                "users": {
                    "tenants": 3,
                    "users_per_tenant": 3
                },
                "quotas": {
                    "neutron": {
                        "network": -1,
                        "port": -1
                    }
                }
            }
        }
    ]
}

error log :
2017-02-13 11:56:32.625 23909 INFO rally.task.runner [-] Task 93c1960e-63fc-41ed-896c-ad75c554909a | ITER: 77 END: Error IpAddressGenerationFailureClient: No more IP addresses available on network 7f482357-4e7f-468d-bf43-36f1c59fdf5d.
Neutron server returns request_ids: ['req-4bb0ada0-9208-428b-96f4-ac31e33a10cf']

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/433013

[xuchaochao (xuchaochao)]

It is the same as
https://docs.openstack.org/developer/performance-docs/_downloads/basic_neutron.html#/NeutronNetworks.create_and_list_ports/failures

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/561100