RFR(S) : 8230364 : [JVMCI] a number of JVMCI tests are not jtreg enabled

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8230364/webrev.02/
> 102 lines changed: 72 ins; 9 del; 21 mod;

Hi all,

could you please review this small patch which adds jtreg test descriptions to all tests in compiler/jvmci/jdk.vm.ci.hotspot.test/src?
to make it work, the patch also:
 - replaces junit ceremonies w/ testng ceremonies;
 - changes TestHotSpotJVMCIRuntime to use platform classLoader instead of ext. loader b/c ext. loader (and internal classes used by the test)  got removed in jdk9;
 - temporary excludes TestTranslatedException. the test fails b/c decoded exception doesn't have information about modules. 8233745 is going to update jdk.vm.ci.hotspot.TranslatedException and remove @ignore from the test.

JBS: https://bugs.openjdk.java.net/browse/JDK-8230364
webrev: http://cr.openjdk.java.net/~iignatyev//8230364/webrev.02/
testing: "added" tests (test/hotspot/jtreg/compiler/jvmci/jdk.vm.ci.hotspot.test/)

Thanks,
-- Igor