RFR JDK-8193479: test/hotspot/jtreg/compiler/codegen/Test6896617.java fails after JDK-8184947

[Xueming Shen]

It appears the consensus is to put this one into the ProblemList and let the
hotspot folks to fix the test case.

issue: https://bugs.openjdk.java.net/browse/JDK-8193479
webrev: http://cr.openjdk.java.net/~sherman/8193479/webrev

The corresponding hotspot/compiler issue filed: JDK-8193549.

I would assume now it needs to get into 11 and backport to 10 repo.

Thanks,
Sherman