"Get Data from Warehouse" and "Query Fr8 Warehouse" don't work properly

[sergei-pankratov]

When we create plan and add "Get Data from Warehouse" and "Query Fr8 Warehouse" activities for testing, we see that they don't signal any fields.
Query_Fr8_Warehouse signals and produces StandardPayloadDataCM>("Found MT Objects").Both of these crates should be visible in slack field selection.
Example Plan:
http://dev.fr8.co/dashboard/plans/1ff733d2-ad01-4fc1-9144-75ef19c0f220/builder?viewMode=plan