kind: Allow to install custom kubevirt versions

[oshoval]

What this PR does and why is it needed

Allow to install custom Kubevirt releases.
Also allows to freeze specific version upon needs, for example if newest breaks stuff,
or if a feature is required before a stable release exists.

Default stays deploy last stable as it was.
Since nightly doesn't release virtctl binary, keep using the latest stable released virtctl.

Use by exporting optional env var KUBEVIRT_VERSION with the requested value.

Possible values of KUBEVIRT_VERSION:

stable - install newest stable (default)
vX.Y.Z - install specific stable (i.e v1.3.1)
nightly - install newest nightly
nightly tag - install specific nightly (i.e 20240910)

Which issue(s) this PR fixes

Fixes #

Special notes for reviewers

quay.io/kubevirt/network-passt-binding does have nightly,
in order to determine the tag, some more logic need to be added,
so for now only support stable

Note that the daemonset that deploys the passt binary use only stable releases,
but this is not due to this PR.

How to verify it

Details to documentation updates

Description for the changelog

Does this PR introduce a user-facing change?

[oshoval]

/cc @maiqueb @qinqon
please take a look once you can, thanks
it will allow us to use kubevirt versions before a new stable is released (that might take time)

EDIT - failures are not related to the PR

[qinqon]

Let's remove inlining and expand them.

[oshoval]

addressed comments, also created a function for it

[qinqon]

LGTM

[oshoval]

LGTM

Thanks Quique, I think an approval via the review console is required please ? so it will be visible on the top right reviewers status list

[RamLavi]

/lgtm

[oshoval]

rebased (had conflict)
EDIT need to fix something

[oshoval]

added on PR desc info about quay.io/kubevirt/network-passt-binding that was added lately
(also lets see tests passing)

(and also about the passt binary but this is not just due to this PR)

[oshoval]

all failures are known flakes
#4709
#4733

[oshoval]

rebased

@qinqon can you please take another look ?

[qinqon]

LGTM

[maiqueb]

/cc @jcaamano

could you take a quick look at this ? We are hoping to get this merged to improve the dev experience.
Thanks in advance.

[oshoval]

closing and reopening so it will run again actions
thx

[jcaamano]

@oshoval could you push again? I generated a merge commit unintentionally.

[oshoval]

done, also cleaned white space
thx