Add domains in path breakdowns

[sajith]

Issue is #110.

Before, breakdown used to be like mentioned in the issue. Now it is like:

{
    "urn:ogf:network:sdx:topology:sax.net": {
        "ingress_port": {
            "id": "urn:ogf:network:sdx:port:zaoxi:A1:2",
            "name": "Novi100:2",
            "short_name": null,
            "node": null,
            "label_range": null,
            "status": null,
            "state": null,
            "private_attributes": null
        },
        "egress_port": {
            "id": "urn:ogf:network:sdx:port:sax:B2:4",
            "label_range": [
                "100-200",
                "10001"
            ],
            "name": "Novi02:4",
            "node": "urn:ogf:network:sdx:node:sax:B2",
            "short_name": "B2:3",
            "status": "up"
        }
    }
}

The critical change is the line where TEManager adds topology the right way, so that TEManager.topology_manager.topology_list is correctly populated, so that TEManager.topology_manager.get_domain_name() returns the domain name instead of None. The rest is mostly noise from testing.