Create ip_v6 network failed

[wangzhh]

Bug reproduce:
1.Create a netwrok ipv6 subnet.
Here is the net info:
[stack@localhost api]$ neutron net-show 6beecca9-3fb5-4c95-8a4c-35075577a85e
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | True |
| availability_zone_hints | |
| availability_zones | nova |
| created_at | 2017-09-17T14:28:57Z |
| description | |
| id | 6beecca9-3fb5-4c95-8a4c-35075577a85e |
| ipv4_address_scope | |
| ipv6_address_scope | |
| mtu | 1450 |
| name | 2001:0DB8:02de |
| port_security_enabled | True |
| project_id | b2343e46ff534dbd93122d2d0853254a |
| provider:network_type | vxlan |
| provider:physical_network | |
| provider:segmentation_id | 11 |
| revision_number | 3 |
| router:external | False |
| shared | False |
| status | ACTIVE |
| subnets | 63e0e73e-865f-4d4b-83da-ca96c5ee0966 |
| tags | |
| tenant_id | b2343e46ff534dbd93122d2d0853254a |
| updated_at | 2017-09-17T14:28:58Z |
+---------------------------+--------------------------------------+

[stack@localhost api]$ neutron subnet-show 63e0e73e-865f-4d4b-83da-ca96c5ee0966
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+-------------------+---------------------------------------------------------------------------+
| Field | Value |
+-------------------+---------------------------------------------------------------------------+
| allocation_pools | {"start": "2001:db8:2de::2", "end": "2001:db8:2de:0:ffff:ffff:ffff:ffff"} |
| cidr | 2001:db8:2de::/64 |
| created_at | 2017-09-17T14:28:58Z |
| description | |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 2001:db8:2de::1 |
| host_routes | |
| id | 63e0e73e-865f-4d4b-83da-ca96c5ee0966 |
| ip_version | 6 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | 2001:0DB8:02de |
| network_id | 6beecca9-3fb5-4c95-8a4c-35075577a85e |
| project_id | b2343e46ff534dbd93122d2d0853254a |
| revision_number | 0 |
| service_types | |
| subnetpool_id | |
| tags | |
| tenant_id | b2343e46ff534dbd93122d2d0853254a |
| updated_at | 2017-09-17T14:28:58Z |
+-------------------+---------------------------------------------------------------------------+

2.Create subnetpool:
neutron subnetpool-create --pool-prefix 2001:db8:2de::/64 neutron_poolx

3.sudo docker network create --driver=kuryr --ipam-driver=kuryr --ipv6 --subnet fd7d:a2f4:9bb9::/64 --gateway=fd7d:a2f4:9bb9::1 --ip-range fd7d:a2f4:9bb9::/64 -o neutron.pool.name=neutron_poolx --ipam-opt=neutron.pool.name=neutron_poolx foo1

Create failed and get an error:

2017-09-17 11:41:12.499 70573 ERROR kuryr_libnetwork.utils [-] Unexpected error happened: No subnetpools with {'name': 'kuryr'} is found.: NoResourceException: No subnetpools with {'name': 'kuryr'} is found.
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/opt/stack/kuryr-libnetwork/kuryr_libnetwork/controllers.py", line 1479, in ipam_request_pool
    subnet_cidr, pool_id = _get_cidr_from_subnetpool(name=pool_name)
  File "/opt/stack/kuryr-libnetwork/kuryr_libnetwork/controllers.py", line 475, in _get_cidr_from_subnetpool
    .format(kwargs))
NoResourceException: No subnetpools with {'name': 'kuryr'} is found.
2017-09-17 11:41:12.500 70573 INFO werkzeug [-] 127.0.0.1 - - [17/Sep/2017 11:41:12] "POST /IpamDriver.RequestPool HTTP/1.1" 500 -

[Kien Nguyen (kiennt2609)]

The syntax should be neutron.pool.v6.name. But it is just a minor.
This bug happens because V6 stills False and Pool is empty. I have raised an issue in moby/moby, wait for Moby developers confirmation:

https://github.com/moby/moby/issues/34902