RFR: 8273376: Zero: Disable vtable/itableStub gtests [v2]

[Aleksey Shipilev]

On Mon, 6 Sep 2021 11:17:14 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Simple test bug fix.
>> 
>> Additional testing:
>>  - [x] Linux x86_64 Server still runs the test
>>  - [x] Linux x86_64 Zero now skips the test
>
> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update copyright

Thanks for reviews!

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PR: https://git.openjdk.java.net/jdk/pull/5377