RFR (S)[12]: 8217666: gc/nvdimm/* should not be included any tiers

[sangheon.kim at oracle.com]

Hi all,

Can I have reviews that excludes gc/nvdimm jtreg tests?

Those tests were introduced by  JDK-8202286 (Allocation of old 
generation of Java heap on alternate memory devices) and tried to 
exclude all tests from all tiers. But it was incomplete so one of the 
tests failed and JDK-8217406 (gc/nvdimm/TestOldObjectsOnNvdimm.java 
failure) was filed recently.

The patch includes to exclude gc/nvdimm from TEST.groups, hotspot_misc 
group(which is the reason why JDK-8217406 occurred). In addition, added 
@requires to gc/nvdimm tests to avoid running the tests.

CR: https://bugs.openjdk.java.net/browse/JDK-8217666
webrev: http://cr.openjdk.java.net/~sangheki/8217666/webrev.0/
Testing: manual tests w/, w/o VM_NVDIMM_TEST environmental variable.

Thanks,
Sangheon