RFR : JDK-8174915 - Improve error handing for Jdp tests under sun/management/jdp

[Amit Sapre]

Hello,

 

Please review minor improvements to jdp test helper class to handle error 
conditions.

 

Bug ID : https://bugs.openjdk.java.net/browse/JDK-8174915 

Webrev : http://cr.openjdk.java.net/~asapre/webrev/2017/JDK-8174915/webrev.00/ 

 

Thanks,

Amit