RFR 8076971: sun/management/jmxremote/startstop/JMXStatusTest.java failed with AssertionError

[Jaroslav Bachorik]

Please, review the following test change

Issue : https://bugs.openjdk.java.net/browse/JDK-8076971
Webrev: http://cr.openjdk.java.net/~jbachorik/8076971/webrev.00

The tests trying to access target JVMs via eg. 'jcmd' will fail on 
embedded configurations if the flag '-XX:+UsePerfData' is not specified.

This patch adds this flag to the test application test builders thus 
making the target JVMs visible to 'jcmd'.

Thanks,

-JB-