Not add subnet for network if metadata_insecure=False

[Artem Savinov]

Core plugin for neutron 'vmware_nsx.plugin.NsxVPlugin'.
NSXv parametrs(Certificate self signed):
metadata_insecure = false
metadata_nova_client_cert = /etc/neutron/plugins/vmware/cert_server.crt
metadata_nova_client_priv_key = /etc/neutron/plugins/vmware/key_server.key

If create tenant network:
neutron net-create --format=shell --shared --tenant_id=13cd7337d9a946fca5a467e8df095fd7 admin_internal_net

and create subnet for netwok:
neutron subnet-create --format=shell --name=admin_internal_net__subnet --gateway-ip=192.168.0.1 --enable-dhcp --dns-nameserver=8.8.8.8 --tenant_id=13cd7337d9a946fca
5a467e8df095fd7 admin_internal_net 192.168.0.0/24

I get error:
http://paste.openstack.org/show/515928/

nsxv neutron plugin from branch stable/mitaka
commit fe269163db36afa48889fd514b15b524b3dc0e2c