UI should show default VM composition values

[Lee Trager]

In LP:1877126 we decided to raise the default memory amount for a VM to 2G. We also discussed that the default values should be shown in the UI. The default core count, memory, and disk amount are now included in the power details for Pods. This information should be displayed in the UI

{
  "10": {
    "driver_type": "pod",
    "name": "lxd",
    "description": "LXD (virtual systems)",
    "fields": [
      {
        "name": "power_address",
        "label": "LXD address",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "bmc"
      },
      {
        "name": "instance_name",
        "label": "Instance name",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "node"
      },
      {
        "name": "password",
        "label": "LXD password (optional)",
        "required": false,
        "field_type": "password",
        "choices": [],
        "default": "",
        "scope": "bmc"
      }
    ],
    "missing_packages": [],
    "chassis": true,
    "queryable": true,
    "defaults": {
      "cores": 1,
      "memory": 2048,
      "storage": 8
    }
  }
}

{
  "15": {
    "driver_type": "pod",
    "name": "rsd",
    "description": "Rack Scale Design",
    "fields": [
      {
        "name": "power_address",
        "label": "Address",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "bmc"
      },
      {
        "name": "power_user",
        "label": "User",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "bmc"
      },
      {
        "name": "power_pass",
        "label": "Password",
        "required": true,
        "field_type": "password",
        "choices": [],
        "default": "",
        "scope": "bmc"
      },
      {
        "name": "node_id",
        "label": "Node ID",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "node"
      }
    ],
    "missing_packages": [],
    "chassis": true,
    "queryable": true,
    "defaults": {
      "cores": 1,
      "memory": 2048,
      "storage": 8
    }
  }
}

{
  "19": {
    "driver_type": "pod",
    "name": "virsh",
    "description": "Virsh (virtual systems)",
    "fields": [
      {
        "name": "power_address",
        "label": "Address",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "bmc"
      },
      {
        "name": "power_pass",
        "label": "Password (optional)",
        "required": false,
        "field_type": "password",
        "choices": [],
        "default": "",
        "scope": "bmc"
      },
      {
        "name": "power_id",
        "label": "Virsh VM ID",
        "required": true,
        "field_type": "string",
        "choices": [],
        "default": "",
        "scope": "node"
      }
    ],
    "missing_packages": [],
    "chassis": true,
    "queryable": true,
    "defaults": {
      "cores": 1,
      "memory": 2048,
      "storage": 8
    }
  }
}

[Caleb Ellis (caleb-ellis)]

Fixed in https://github.com/canonical-web-and-design/maas-ui/pull/1147