RFR(S) : 8243428 : use reproducible random in :vmTestbase_vm_compiler

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev/8243428/webrev.00
> 158 lines changed: 76 ins; 2 del; 80 mod;

Hi all,

could you please review this small patch?
from JBS:
> this subtask is to use j.t.l.Utils.getRandomInstance() as a random number generator, where applicable, in :vmTestbase_vm_compiler test group and marking the tests which make use of "randomness" with a proper k/w.

testing: :vmTestbase_vm_compiler test group
JBS: https://bugs.openjdk.java.net/browse/JDK-8243428
webrevs:
 - code changes: http://cr.openjdk.java.net/~iignatyev/8243428/webrev.00.code
> 15 lines changed: 7 ins; 2 del; 6 mod;

 - adding k/w: http://cr.openjdk.java.net/~iignatyev/8243428/webrev.00.kw/
> 69 lines changed: 69 ins; 0 del; 0 mod;

 - full: http://cr.openjdk.java.net/~iignatyev/8243428/webrev.00
> 158 lines changed: 76 ins; 2 del; 80 mod;

Thanks,
-- Igor