RFR: 8039995: Test serviceability/sa/jmap-hashcode/Test8028623.java fails on some Linux/Mac machines.

[Kevin Walls]

Hi,

I'd like to get a review of this test change.  It assumed that jmap 
would have permission to run on a process that the test itself created, 
but this is not necessarily the case.

Here I'm considering it OK to skip (pass) the test where jmap fails to 
attach.  The test itself was not platform-specific and as long as we 
have other platforms where jmap step will work, we are testing for this 
problem.

bug:
https://bugs.openjdk.java.net/browse/JDK-8039995

webrev:
http://cr.openjdk.java.net/~kevinw/8039995/webrev.00/

Thanks
Kevin