[2.0a1] PXE interface incorrectly displayed on the UI

[Andres Rodriguez]

The PXE interface is incorrectly determine. In this case, eth0 is the PXE interface but MAAS is saying eth1: is:

http://people.canonical.com/~andreserl/pxe-interface.png

Interface shows that the PXE MAC is eth1, but the API shows it is eth0.
http://people.canonical.com/~andreserl/interface_mac_pxe.png

Also, after taking a close look at the API output:

1. Fabric on eth0 is determined incorrectly, as this should be 'Fabric-2' instead of 'Fabric-0'. This reflects on both the API and UI.
2. PXE interface is determined correctly on the API, but what the Web UI shows is different.

Machine's output:

[
    {
        "type": "physical",
        "id": 136,
        "resource_uri": "/MAAS/api/2.0/nodes/4y3haq/interfaces/136/",
        "children": [],
        "mac_address": "74:d4:35:89:bd:2b",
        "params": "",
        "vlan": {
            "primary_rack": null,
            "id": 1,
            "resource_uri": "/MAAS/api/2.0/vlans/1/",
            "mtu": 1500,
            "name": "untagged",
            "dhcp_on": false,
            "secondary_rack": null,
            "fabric": "fabric-0",
            "vid": 0
        },
        "tags": [],
        "parents": [],
        "effective_mtu": 1500,
        "enabled": true,
        "name": "eth0",
        "links": [],
        "discovered": null
    },
    {
        "type": "physical",
        "id": 137,
        "resource_uri": "/MAAS/api/2.0/nodes/4y3haq/interfaces/137/",
        "children": [],
        "mac_address": "74:d4:35:89:bd:2c",
        "params": "",
        "vlan": {
            "primary_rack": null,
            "id": 1,
            "resource_uri": "/MAAS/api/2.0/vlans/1/",
            "mtu": 1500,
            "name": "untagged",
            "dhcp_on": false,
            "secondary_rack": null,
            "fabric": "fabric-0",
            "vid": 0
        },
        "tags": [],
        "parents": [],
        "effective_mtu": 1500,
        "enabled": true,
        "name": "eth1",
        "links": [],
        "discovered": null
    }
]

VLAN output:

ubuntu@trusty-maas9:~$ maas admin vlans read fabric-0
Success.
Machine-readable output follows:
[
    {
        "vid": 0,
        "resource_uri": "/MAAS/api/2.0/vlans/1/",
        "secondary_rack": null,
        "id": 1,
        "fabric": "fabric-0",
        "mtu": 1500,
        "name": "untagged",
        "primary_rack": null,
        "dhcp_on": false
    }
]
ubuntu@trusty-maas9:~$ maas admin vlans read fabric-1
Success.
Machine-readable output follows:
[
    {
        "vid": 0,
        "resource_uri": "/MAAS/api/2.0/vlans/2/",
        "secondary_rack": null,
        "id": 2,
        "fabric": "fabric-1",
        "mtu": 1500,
        "name": "untagged",
        "primary_rack": null,
        "dhcp_on": false
    }
]
ubuntu@trusty-maas9:~$ maas admin vlans read fabric-2
Success.
Machine-readable output follows:
[
    {
        "vid": 0,
        "resource_uri": "/MAAS/api/2.0/vlans/3/",
        "secondary_rack": null,
        "id": 3,
        "fabric": "fabric-2",
        "mtu": 1500,
        "name": "untagged",
        "primary_rack": "4y3h7n",
        "dhcp_on": true
    }
]