Update crio installation steps for CentOS/RHEL

[geragio]

Hi,

crio installation steps for CentOS/RHEL distribution are not valid anymore(CBS repo does not exist anymore)

I'm updating the documentation following instructions reported on crio official repository https://github.com/cri-o/cri-o

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Welcome @geragio!

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[geragio]

verify

[netlify]

Deploy preview for kubernetes-io-master-staging ready!

Built with commit b06e2af

https://deploy-preview-20544--kubernetes-io-master-staging.netlify.app

[bart0sh]

/lgtm

[bart0sh]

/assign @jimangel

[sftim]

What should the reader substitute for [REQUIRED VERSION]? (also, there might be a shortcode that can fill it in automatically during a website build).

[geragio]

The substitute should be the crio version you would like to install(for example 1.17)
crio and Kubernetes follow the same release cycle and they share the same version number

[sftim]

I think this will let the site build put the right version in automatically:
{{< skew latestVersion >}}

For example:

curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable:cri-o:{{< skew latestVersion >}}.repo https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable:cri-o:{{< skew latestVersion >}}/CentOS_7/devel:kubic:libcontainers:stable:cri-o:{{< skew latestVersion >}}.repo

[sftim]

/sig node
I suppose

[sftim]

Markdown looks good to me. Instructions are adapted from https://github.com/cri-o/cri-o#readme

/lgtm

[geragio]

/assign @jimangel

[kbhawkey]

@jimangel , Comments?

[kbhawkey]

Hi @geragio . Thanks for opening this pull request.
Page preview:
https://deploy-preview-20544--kubernetes-io-master-staging.netlify.app/docs/setup/production-environment/container-runtimes/

[sftim]

You know what, I'll
/approve

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