message: refactor: Blossom metric fields for dataset API column selection
diff: @@ -147,6 +147,7 @@ class DatasetRestApi(BaseSupersetModelRestApi):
  "owners.username",
  "owners.first_name",
  "owners.last_name",
  + "columns.advanced_data_type",
  "columns.changed_on",
  "columns.column_name",
  "columns.created_on",
  @@ -162,7 +163,18 @@ class DatasetRestApi(BaseSupersetModelRestApi):
  "columns.type",
  "columns.uuid",
  "columns.verbose_name",
  - "metrics",
  + "metrics", # TODO(john-bodley): Deprecate in 3.0.
  + "metrics.changed_on",
  + "metrics.created_on",
  + "metrics.d3format",
  + "metrics.description",
  + "metrics.expression",
  + "metrics.extra",
  + "metrics.id",
  + "metrics.metric_name",
  + "metrics.metric_type",
  + "metrics.verbose_name",
  + "metrics.warning_text",
  "datasource_type",
  "url",
  "extra",
  