[11] RFR(S) 8204113: Upgrade linker used in AOT tests to be same version as build toolchain

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/8204113/webrev.01/
https://bugs.openjdk.java.net/browse/JDK-8204113

AOT tests need a local linker to generate AOT libraries. They load 
devkits from our infrastructure when there is no local linker on testing 
machine. The names of devkits are hardcoded in AotCompiler.java (java 
wrapper which launches 'jaotc' tool).

We recently updated compilers for JDK 11. As result devkit names in 
AotCompiler.java should be updated too.

Tested by running AOT tests on all our supported platforms.

-- 
Thanks,
Vladimir