FIXME: These functions should probably do something with the response NOTE: I find is strange that the expected return value here is effectively the same as the function inputs
async function addWorkers(executionContext, numWorkers) {
        await k8s.scaleExecution(executionContext.ex_id, numWorkers, 'add');
        return { action: 'add', ex_id: executionContext.ex_id, workerNum: numWorkers };
    }