Fix tenant floating_ip_allocation call in neutron rest api.

The call to allocate a new floating IP was incorrecting calling
tenant_floating_ip_allocate, this is used by neutron-lbaas-dashboard.

Change-Id: Ia4d1367ccd309a074a0ea84a555d7de6c07971a6
Closes-bug: #1831954

openstack_dashboard/api/rest/network.py

@@ -67,7 +67,7 @@ class FloatingIP(generic.View):
         if 'dns_name' in request.DATA:
             params['dns_name'] = request.DATA['dns_name']
         result = api.neutron.tenant_floating_ip_allocate(request, pool,
-                                                         None, params)
+                                                         None, **params)
         return result.to_dict()
 
     @rest_utils.ajax(data_required=True)

openstack_dashboard/test/unit/api/rest/test_network.py

@@ -77,7 +77,7 @@ class RestNetworkApiFloatingIpTests(test.TestCase):
         self.mock_tenant_floating_ip_allocate.assert_called_once_with(request,
                                                                       'pool',
                                                                       None,
-                                                                      {})
+                                                                      **{})
 
     @test.create_mocks({api.neutron: ['floating_ip_associate']})
     def test_associate_floating_ip(self):