8149642: gc/g1/TestShrinkAuxiliaryData* tests fail with "GC triggered before VM initialization completed"

[Stefan Johansson]

Hi,

Please review this small change to fix:
https://bugs.openjdk.java.net/browse/JDK-8149642

Webrev:
http://cr.openjdk.java.net/~sjohanss/8149642/hotspot.00/

Summary:
Using AggressiveOpts cause a lot more early allocations and together 
with the TestShrinkAuxiliaryData* tests which specifies 
ObjectAlignmentInBytes=256 we sometimes on small systems end up doing do 
much allocations during startup that a GC is triggered before we are 
ready for it. This has nothing to do with the test it self and can be 
reproduce simply by running -version with the same options, as long as 
the initial young generation is small enough we will fail.

This fix adds a @requires statement to these test to ensure that they 
are not run with AggressiveOpts.

Testing:
Verified locally and with RBT that the tests no longer fail (or even 
run) when AggressiveOpts is specified.

Thanks,
Stefan