RFR 9: 8098852 : java/lang/ProcessHandle/InfoTest.java failed: total cpu time

Please review this ProcessHandle test change to cleanup intermittent failures. The cpuloop timing uses the cputime of the spawned process and the test runs fewer iterations and relaxes the threshold. Webrev: http://cr.openjdk.java.net/~rriggs/webrev-info-8098852/ Issue: https://bugs.openjdk.java.net/browse/JDK-8098852 Thanks, Roger