Improve lookup for StepItem

[hvge]

We should change way how we get a result from ObjectStepLogger. Currently, there are many enumeration loops over the items array, just to get the right object. We can simplify this with using the brand new lookup by item-id. For example:

        // Verify decrypted activationId
        String activationId = null;
        ActivationRecovery activationRecovery = null;
        for (StepItem item: stepLoggerPrepare.getItems()) {
            if (item.getName().equals("Activation Done")) {
                Map<String, Object> responseMap = (Map<String, Object>) item.getObject();
                activationId = (String) responseMap.get("activationId");
                break;
            }
            if (item.getName().equals("Decrypted Layer 2 Response")) {
                activationRecovery = ((ActivationLayer2Response)item.getObject()).getActivationRecovery();
            }
        }

could be replaced with a much simpler code:

       // Verify decrypted activationId
        String activationId = (String)((Map<String, Object>)stepLoggerPrepare.getFirstItem("activation-create-activation-done").getObject()).get("activationId");
        ActivationRecovery activationRecovery = ((ActivationLayer2Response)stepLoggerPrepare.getFirstItem("activation-create-response-decrypt-inner").getObject()).getActivationRecovery();

This is a quite dull task, so it has a low priority.