feat(networks): add default value to networks data source (#161)

docs/data-sources/networks.md

@@ -30,6 +30,7 @@ data "katapult_networks" "all" {}
 Read-Only:
 
 - `data_center_id` (String) The ID of the data center this network belongs to.
+- `default` (Boolean) True if this is the default network for the data center it belongs to.
 - `id` (String) The ID of this resource.
 - `name` (String) The name of the network.
 - `permalink` (String) The permalink of the network.

internal/v6provider/data_source_networks.go

@@ -48,14 +48,7 @@ func (nds *NetworksDataSource) Configure(
 }
 
 func NetworkListType() types.ObjectType {
-	t := NetworkType()
-
-	// When fetching a list of Networks we do not include the "default"
-	// attribute, as it currently requires separate API calls for each data
-	// center.
-	delete(t.AttrTypes, "default")
-
-	return t
+	return NetworkType()
 }
 
 func (nds *NetworksDataSource) Schema(
@@ -86,6 +79,11 @@ func (nds *NetworksDataSource) Schema(
 							Description: "The ID of the data center this " +
 								"network belongs to.",
 						},
+						"default": schema.BoolAttribute{
+							Computed: true,
+							Description: "True if this is the default " +
+								"network for the data center it belongs to.",
+						},
 					},
 				},
 			},
@@ -129,6 +127,7 @@ func (nds *NetworksDataSource) Read(
 			"name":           types.StringPointerValue(network.Name),
 			"permalink":      types.StringValue(permalink),
 			"data_center_id": types.StringPointerValue(network.DataCenter.Id),
+			"default":        types.BoolPointerValue(network.Default),
 		}
 
 		list[i] = types.ObjectValueMust(NetworkListType().AttrTypes, attrs)

internal/v6provider/data_source_networks_test.go

@@ -67,6 +67,11 @@ func testAccCheckKatapultNetworksAttrs(
 				"id":             *network.Id,
 				"name":           *network.Name,
 				"data_center_id": *network.DataCenter.Id,
+				"default":        "false",
+			}
+
+			if *network.Default {
+				attrs["default"] = "true"
 			}
 
 			if !network.Permalink.IsNull() {