feat: multiarch fedora template.

[nestoracunablanco]

Fedora offers images for a variety of architectures, which can be included as a template parameter. Within the template, there is a specific parameter for defining the architecture.

For the sake of simplicity, I have currently set the host architecture.

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 #

Special notes for your reviewer:

Release note:

NONE

[openshift-ci]

Hi @nestoracunablanco. Thanks for your PR.

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[jcanocan]

/ok-to-test
/cc @ksimon1

[0xFelix]

@ksimon1 Can you remind me why we need this field at all in the template?

@nestoracunablanco Did you check all fields enabled in the template work with s390x?

[nestoracunablanco]

@0xFelix, next Monday, I will likely have access to a machine capable of running (internally) the Fedora end-to-end tests on s390x. So far, I have verified that the generated template includes the link to the s390x images and correctly points to the s390x architecture (when running it on s390x). Additionally, I tested to ensure that it keeps the functionality running on amd64, which you will probably notice in the CI.

[ksimon1]

@ksimon1 Can you remind me why we need this field at all in the template?

#573
As @lyarwood described in PR, the templates are only tested against amd64 machines

[ksimon1]

/approve

[kubevirt-bot]

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[jcanocan]

/lgtm