RFR: 8287906: Rewrite of GitHub Actions (GHA) sanity tests [v4]

[Magnus Ihse Bursie]

On Fri, 10 Jun 2022 07:18:34 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Apparently that was not a legal reference to actions/checkout. Try another way.
>
> .github/workflows/main.yml line 138:
> 
>> 136:       apt-gcc-version: '10-multilib'
>> 137:       apt-architecture: ':i386'
>> 138:       apt-add-architecture: 'sudo dpkg --add-architecture i386'
> 
> Feels a bit weird to have the entire command line here. I'd expect to see something like `apt-add-architecture: i386`.

If I do that, there need to be some kind of if statement in the called workflow, since if that input argument is left out, we'd get a command line like `sudo dpkg --add-architecture` which I assume is illegal syntax (or, possibly worse, does something other than a no-op).

I think there can be room for additional improvement in especially the "special" linux builds, but I had to draw the line somewhere, to be able to finish this PR.

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PR: https://git.openjdk.org/jdk/pull/9063