nsk/share/test/StressOptions stressTime is scaled in getter but not when printed

StressOptions was recently changed to take timeout-factor into consideration but getTime() that does the scaling is not used when printing the stress info:
```
    public void printInfo(PrintStream out) {
        out.println("Stress time: " + time + " seconds");
        out.println("Stress iterations factor: " + iterationsFactor);
        out.println("Stress threads factor: " + threadsFactor);
        out.println("Stress runs factor: " + runsFactor);
    }
```
So the information printed in the beginning of the tests doesn't show the correct stress time.