[BP MB-40336] - Action continues even after error on REST API

Jon Strabala reports:

Referring to the /

{pause,resume,undeploy,deploy}

endpoints one odd thing I ran the following (it claimed an error but the function still paused) so I think there is a bug:
curl -XGET http://Administrator:password@192.168.3.150:8096/api/v1/functions/test/pause
{
"name": "ERR_INVALID_CONFIG",
"code": 38,
"description": "Invalid configuration",
"attributes": null,
"runtime_info":

{ "code": 38, "info": "Only POST call allowed to this endpoint" }

}
If we return an ERR_INVALID_CONFIG we shouldn't actually do the action.