Fix 589, Adding AlmaLinux support - config, scripts, document changes

[srbala]

This Pull reqeust addes AlmaLinux as one of the suppoted OSs. Resolves #589.

It contains the changes required for config files, shell scripts, test scripts and documentaion.

Docker files change will be added as seperated PR. This way code review will be cleaner.

[karianna]

@gdams - I think I'm OK with landing this here - I know at Adoptium we'll have a reduced set.

[srbala]

I know at Adoptium we'll have a reduced set.
@karianna Any discussion on future of this repo in Adoptium PMC, links or more info.

[karianna]

I know at Adoptium we'll have a reduced set.
@karianna Any discussion on future of this repo in Adoptium PMC, links or more info.

@gdams - I'm guessing the minutes of the various PMC meetings cover this?

[srbala]

I have docker file changes ready to go. I can request new PR for docker files when current PR is approved and merged. https://github.com/srbala/openjdk-docker/tree/fix-589-pr2

[sxa]

@gdams - I'm guessing the minutes of the various PMC meetings cover this?

ping @gdams for confirmation on the above.

I think I'm OK with landing this here - I know at Adoptium we'll have a reduced set.

@karianna I'm personally a little nervous about adding something we potentially won't support going forward (which isn't far away!) :-\

[karianna]

Yeah, maybe one to ask the PMC (should we support this).

[karianna]

Holding off for now. See adoptium/containers#1

[saper]

The question here is rather what will be a replacement of a current CentOS docker image; although CentOS 8 is going to limp towards the end of 2021 with RPM updates, as of 2021-07-21 they haven't published 8.4 update, so users are stuck with unsupported 8.3 image from December 2020.