RFR: 8279013 : ES2Pipeline fails to detect AMD vega20 graphics card

[Paul]

I have an AMD Radeon VII (vega20) series GPU which is identifying with a vendor string of "AMD".

This is not present in the `X11GLFactory` list of `preQualificationFilter` vendor names, so my system (and probably any other vega20 based cards under Linux) will always fall back to software rendering.

This adds the "amd" string to the `preQualificationFilter` list.

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Commit messages:
 - Adds support for AMD graphics cards that identify themselves with "AMD" vendor strings.

Changes: https://git.openjdk.java.net/jfx/pull/698/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=698&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8279013
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jfx/pull/698.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/698/head:pull/698

PR: https://git.openjdk.java.net/jfx/pull/698