RFR: 8028254: gc/arguments/TestMinInitialErgonomics.java failed with unexpected initial heap size

[Erik Helin]

Hi all,

this change updates the test hotspot/test/gc/arguments/
TestMinInitialErgonomics.java to reflect the changes made to the heap 
sizing code.

The first part is just updating the function WB_PrintHeapSizes in 
whitebox.cpp to use the same naming as the VM.

The second part changes TestMinInitialErgonomics.java to use the same 
naming as the VM and also align the expectedHeapSize correctly:

Webrev:
http://cr.openjdk.java.net/~ehelin/8028254/webrev.00/

Testing:
Reproduced test failure locally and verified the fix

Bug:
https://bugs.openjdk.java.net/browse/JDK-8028254

Thanks,
Erik