RFR(S): 8166462: Convert TestResourcehash_test to Gtest

[Kirill Zhaldybin]

Dear all,

Could you please review this fix for 8166462?

After discussion with the author of the original test (Mikael Gerdin) a 
few changes were done during conversion:
1. removed "if not product" guards and checks for Resource Marks since 
we believe that we are in controlled env and we cannot have any RM
2. parametrized "small" test and removed "shifted small" test since they 
were very similar and depended only on one parameter

WebRev: http://cr.openjdk.java.net/~kzhaldyb/webrevs/JDK-8166462/webrev.00/
CR:https://bugs.openjdk.java.net/browse/JDK-8166462

Thank you.

Regards, Kirill