Enable epel for amazon linux in CI

[VannTen]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
Align CI with the documentation

Should unbreak amazon linux CI.

Does this PR introduce a user-facing change?:

NONE

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[yankay]

HI @VannTen

I am happy you are fixing the CI at the same time :-)
How about you think about the solution of #11182.
The #11182 tries to keep the Amazon Linux with the same as Redhat, it can make things simpler :-)

[VannTen]

I've gone this way because container-selinux was not installed on Amazon Linux before da3ff1c ; so my PR was going back to that state. That said, if Kubespray does need container-selinux on Amazon Linux, I don't have particular objection. (If we do this though, I think the repo enabling should go in boostrap-os/tasks/amzn.yml)

[yankay]

I've gone this way because container-selinux was not installed on Amazon Linux before da3ff1c ; so my PR was going back to that state. That said, if Kubespray does need container-selinux on Amazon Linux, I don't have particular objection. (If we do this though, I think the repo enabling should go in boostrap-os/tasks/amzn.yml)

Thanks @VannTen for the advice, The PR #11182 is changed to boostrap-os/tasks/amzn.yml

According to https://docs.aws.amazon.com/linux/al2023/ug/compare-with-al2.html#building-on-fedora ,

AL2 features a high level of compatibility with CentOS 7, and AL2023 is RPM-based and includes components sourced from multiple versions of Fedora and other distributions, such as CentOS 9 Stream. 

So keeping Amazon Linux simpler to Centos and installing container-selinux is better for maintaince.

[VannTen]

Replaced by #11182