client-go timeouts do not work for non WATCH

[szuecs]

upstream issue kubernetes/client-go#374

One fix that would work is wrapping the code with an external timeout, which is not nice but works:

    done := make(chan bool, 1) // NB: buffered
    go func() {
        operationWithoutTimeout()
        done <- true
    }()
    // variance control of operation
    select {
    case <-done:
    case <-time.After(3 * time.Millisecond):
    }