Nova instance custom name

Hi,

I'm running Rally benchmark scenarios related to nova on my openstack setup. Every time it creates an instance with randomly generated name.

I modified the JSON file to have "name" as parameter within "args" which is as shown below:
"args": {
      "flavor": {
        "name": "m1.tiny"
      },
      "auto_assign_nic": true,
      "image": {
        "name": "cirros"
      },
      "name": "s_random"

When i executed the scenario, I'm getting the following error:

test scenario NovaServers.boot_and_delete_server
args position 0
args values:
{
  "runner": {
    "type": "constant",
    "concurrency": 1,
    "times": 1
  },
  "args": {
    "flavor": {
      "name": "m1.tiny"
    },
    "auto_assign_nic": true,
    "image": {
      "name": "cirros"
    },
    "name": "s_random"
  },
  "context": {
    "users": {
      "users_per_tenant": 2,
      "project_domain": "default",
      "user_choice_method": "random",
      "user_domain": "default",
      "tenants": 3,
      "resource_management_workers": 20
    },
    "network": {
      "network_create_args": {},
      "subnets_per_network": 1,
      "start_cidr": "10.2.0.0/24",
      "dns_nameservers": null,
      "networks_per_tenant": 2
    }
  }
}

--------------------------------------------------------------------------------
 Task 228e18ee-d63e-45fa-9e41-147af9dc241d has 1 error(s)
--------------------------------------------------------------------------------

TypeError: create() got multiple values for keyword argument 'name'

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/rally/task/runner.py", line 67, in _run_scenario_once
    getattr(scenario_inst, method_name)(**scenario_kwargs)
  File "/usr/lib/python2.7/site-packages/rally/plugins/openstack/scenarios/nova/servers.py", line 99, in boot_and_delete_server
    server = self._boot_server(image, flavor, **kwargs)
  File "/usr/lib/python2.7/site-packages/rally/task/atomic.py", line 84, in func_atomic_actions
    f = func(self, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/rally/plugins/openstack/scenarios/nova/utils.py", line 141, in _boot_server
    server_name, image_id, flavor_id, **kwargs)
TypeError: create() got multiple values for keyword argument 'name'

I have edited the "rally/plugins/openstack/scenarios/nova/utils.py" file to get the server_name from the JSON file and the code snippet is as below:

changes made in "_boot_server" sub-routine:

def _boot_server(self, image_id, flavor_id,
                     auto_assign_nic=False, **kwargs):
        """Boot a server.

        Returns when the server is actually booted and in "ACTIVE" state.

        If multiple networks created by Network context are present, the first
        network found that isn't associated with a floating IP pool is used.

        :param image_id: int, image ID for server creation
        :param flavor_id: int, flavor ID for server creation
        :param auto_assign_nic: bool, whether or not to auto assign NICs
        :param kwargs: other optional parameters to initialize the server
        :returns: nova Server instance
        """
        #server_name = self.generate_random_name()
        server_name = kwargs["name"]

Can some one please let me know whether the approach which i have followed is correct or not. If not, please advice.

Thanks,
Rajeev