feat: s390x centos-stream9 enablement

[nestoracunablanco]

What this PR does / why we need it: s390x enablement

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

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NONE

[nestoracunablanco]

/retest

[ksimon1]

/approve
@fossedihelm can you please review this PR?

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[fossedihelm]

/lgtm
just a note: containerdisk for s390x is not available

[nestoracunablanco]

Thanks @fossedihelm @ksimon1!
FYI: centos-stream 9 containerdisk is available for s390x. Link here.

[fossedihelm]

Thanks @fossedihelm @ksimon1! FYI: centos-stream 9 containerdisk is available for s390x. Link here.

In osinfo-db/data/os/centos.org/centos-stream-9.xml I only see x86_64

    <image arch="x86_64" format="containerdisk" cloud-init="true">
      <url>docker://quay.io/containerdisks/centos-stream:9</url>
    </image>
    <image arch="aarch64" format="qcow2" cloud-init="true">
      <url>https://cloud.centos.org/centos/9-stream/aarch64/images/CentOS-Stream-GenericCloud-9-latest.aarch64.qcow2</url>
    </image>
    <image arch="ppc64le" format="qcow2" cloud-init="true">
      <url>https://cloud.centos.org/centos/9-stream/ppc64le/images/CentOS-Stream-GenericCloud-9-latest.ppc64le.qcow2</url>
    </image>
    <image arch="s390x" format="qcow2" cloud-init="true">
      <url>https://cloud.centos.org/centos/9-stream/s390x/images/CentOS-Stream-GenericCloud-9-latest.s390x.qcow2</url>
    </image>
    <image arch="x86_64" format="qcow2" cloud-init="true">
      <url>https://cloud.centos.org/centos/9-stream/x86_64/images/CentOS-Stream-GenericCloud-9-latest.x86_64.qcow2</url>
    </image>

[0xFelix]

@fossedihelm Good catch, we totally missed that. This needs to be updated for a bunch of distributions (Fedora, CentOS, Ubuntu, ...).