RFR: 8235908: omit ThreadPriorityPolicy warning when value is set from image

[Tobias Hartmann]

[adding hotspot-runtime-dev]

On 06.03.20 09:56, Matthias Neugschwandtner wrote:
> Hello everyone,
> 
> Please review this change, which omits the warning that ThreadPriorityPolicy=1 requires system level
> permission if the value is set via jlink, the same way it is omitted if the value is set by default.
> 
> https://bugs.openjdk.java.net/browse/JDK-8235908
> http://cr.openjdk.java.net/~mneugschwand/8235908
> 
> Thank you,
> Matthias