test_heat: ipaddress expects unicode inputs

test_heat: ipaddress expects unicode inputs

weird error

E           AddressValueError: '10.20.0.0/15' does not appear to be an IPv4 or IPv6 network. Did you pass in a bytes (str in Python 2) instead of a unicode object?

I guess we need to convert the stack.outputs mock to unicode

FAILED
tests/unit/benchmark/contexts/test_heat.py:137 (HeatContextTestCase.test_add_server_port)
self = <tests.unit.benchmark.contexts.test_heat.HeatContextTestCase testMethod=test_add_server_port>

    def test_add_server_port(self):
        network1 = mock.MagicMock()
        network1.vld_id = 'vld111'
        network2 = mock.MagicMock()
        network2.vld_id = 'vld777'
        self.test_context.name = 'foo'
        self.test_context.stack = mock.MagicMock()
        self.test_context.networks = {
            'a': network1,
            'c': network2,
        }
        self.test_context.stack.outputs = {
            'b': '10.20.30.45',
            'b-subnet_id': 1,
            'foo-a-subnet-cidr': '10.20.0.0/15',
            'foo-a-subnet-gateway_ip': '10.20.30.1',
            'b-mac_address': '00:01',
            'b-device_id': 'dev21',
            'b-network_id': 'net789',
            'd': '40.30.20.15',
            'd-subnet_id': 2,
            'foo-c-subnet-cidr': '40.30.0.0/18',
            'foo-c-subnet-gateway_ip': '40.30.20.254',
            'd-mac_address': '00:10',
            'd-device_id': 'dev43',
            'd-network_id': 'net987',
        }
        server = mock.MagicMock()
        server.ports = OrderedDict([
            ('a', {'stack_name': 'b'}),
            ('c', {'stack_name': 'd'}),
        ])

        expected = {
            "private_ip": '10.20.30.45',
            "subnet_id": 1,
            "subnet_cidr": '10.20.0.0/15',
            "network": '10.20.0.0',
            "netmask": '255.254.0.0',
            "gateway_ip": '10.20.30.1',
            "mac_address": '00:01',
            "device_id": 'dev21',
            "network_id": 'net789',
            "network_name": 'a',
            "local_mac": '00:01',
            "local_ip": '10.20.30.45',
            "vld_id": 'vld111',
        }
>       self.test_context.add_server_port(server)

tests/unit/benchmark/contexts/test_heat.py:186:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
yardstick/benchmark/contexts/heat.py:307: in add_server_port
    network_name, port['stack_name'], self.stack.outputs)
yardstick/benchmark/contexts/heat.py:315: in make_interface_dict
    subnet_ip = ipaddress.ip_network(subnet_cidr)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

address = '10.20.0.0/15', strict = True

    def ip_network(address, strict=True):
        """Take an IP string/int and return an object of the correct type.

        Args:
            address: A string or integer, the IP network.  Either IPv4 or
              IPv6 networks may be supplied; integers less than 2**32 will
              be considered to be IPv4 by default.

        Returns:
            An IPv4Network or IPv6Network object.

        Raises:
            ValueError: if the string passed isn't either a v4 or a v6
              address. Or if the network has host bits set.

        """
        try:
            return IPv4Network(address, strict)
        except (AddressValueError, NetmaskValueError):
            pass

        try:
            return IPv6Network(address, strict)
        except (AddressValueError, NetmaskValueError):
            pass

        if isinstance(address, bytes):
            raise AddressValueError(
                '%r does not appear to be an IPv4 or IPv6 network. '
                'Did you pass in a bytes (str in Python 2) instead of'
>               ' a unicode object?' % address)
E           AddressValueError: '10.20.0.0/15' does not appear to be an IPv4 or IPv6 network. Did you pass in a bytes (str in Python 2) instead of a unicode object?

../../yardstick/yardstick_venv/lib/python2.7/site-packages/ipaddress.py:199: AddressValueError

Change-Id: Ie3b087a26a054203573eaa9b13c3e90152bba6a9
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>