RFR (S): 8145728 compiler/cpuflags/TestAESIntrinsicsOnSupportedConfig.java fails in some configurations

[Ekaterina Pavlova]

Hi all,

Please review the fix for compiler/cpuflags/TestAESIntrinsicsOnSupportedConfig.java.
The testcase 'testUseAES' fails in case the test is ran in server configuration where -XX:TieredStopAtLevel is set to 1,2 or 3.
Added TieredStopAtLevel check.

Also got rid of AESSupportPredicate and use "@requires" instead.
This is more efficient as in this case the tests will be skipped if pre-conditions are not valid.
Such tests should be also reported as "not run" instead of "passed" which is more accurate.

   bug: https://bugs.openjdk.java.net/browse/JDK-8145728
webrev: http://cr.openjdk.java.net/~epavlova//8145728/webrev.00/

Tested by running jprt and manually running compiler/cpuflags tests with different -XX:TieredStopAtLevel values.

thanks,
-katya

p.s.
 Igor Ignatyev volunteered to sponsor this change.