RFR: 8254691: Enable GitHub actions for jfx repo [v2]

[Kevin Rushforth]

On Sat, 31 Oct 2020 14:35:09 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> This works fine. I have a minor comment (about using 15.0.1, but since we don't use that in build.properties either, I think it's not an issue), and apart from that, this looks very good.
>
> I'd rather update the boot JDK to 15.0.1 as a follow-on fix, so that it matches the version defined in build.properties. I filed the following follow-on issues:
> 
> [JDK-8255714](https://bugs.openjdk.java.net/browse/JDK-8255714): Switch FX build to use JDK 15.0.1 as boot JDK
> [JDK-8255712](https://bugs.openjdk.java.net/browse/JDK-8255712): GitHub actions: read boot JDK version and URL from build.properties
> [JDK-8255713](https://bugs.openjdk.java.net/browse/JDK-8255713): GitHub actions: JavaFX build should discover Visual Studio compiler on system

> So this doesn?t show lower level test just basically a build successfully pass/fail on each platform? Or would it show any low level tests if they failed?

If there is a build or test failure you get a link to the failing tasks and can look at the log file to see the failures (no summary at the present time, though). For example, here are the results from the test build done in PR #339 :


|     | Linux x64 | Windows x64 | macOS x64 |
| --- | ----- | ----- | ----- |
| Build / test | ✔️ (1/1 passed) | ❌ (1/1 failed) | ❌ (1/1 failed) |

**Failed test tasks**
- [Windows x64](https://github.com/kevinrushforth/jfx/runs/1316694644)
- [macOS x64](https://github.com/kevinrushforth/jfx/runs/1316694612)

-------------

PR: https://git.openjdk.java.net/jfx/pull/338