feat: 🎸 Add new fields to host

Add new fields to host and refactor field address to use no more
fragment-host-attribute-model

addons/api/addon/generated/models/host.js

@@ -44,9 +44,27 @@ export default class GeneratedHostModel extends BaseModel {
   })
   version;
 
+  @attr({
+    description: 'Attributes specific to the host type',
+  })
+  attributes;
+
+  @attr('string', {
+    description: 'The address (DNS or IP name) used to reach the host',
+    isNestedAttribute: true,
+  })
+  address;
+
   @attr({
     description: 'Plugin information for this resource.',
     readOnly: true,
   })
   plugin;
+
+  @attr('string', {
+    description: '',
+    readOnly: true,
+    isNestedAttribute: true,
+  })
+  external_id;
 }