[Kubevirt] Remove EgressFirewall Creation in HCP namespace

[orenc1]

Starting from 4.14, the EgressFirewall is not needed any longer, since kubevirt platform consumes the kubevirt provider in RHCOS, thus an attempt to access the metadata server is not being initiated, as opposed to the legacy OpenStack RHCOS provider.
Therefore, EgressFirewall is not needed to be deployed on the mgmt/infra cluster for guests >= v4.14.

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• This change includes unit tests.

[qinqon]

I think we can remove the egressfirewall thing altogether from hypershift >= 4.14. What do you think @davidvossel ?

[orenc1]

I think we can remove the egressfirewall thing altogether from hypershift >= 4.14. What do you think @davidvossel ?

but we have an annotation of hypershift.openshift.io/allow-unsupported-kubevirt-rhcos-variants that can potentially allow creation of guest clusters of <= 4.13.
if we'll remove it from main/4.14, users won't be able to create guest clusters of lower minor versions.

do we want to remove that escape hatch?

[orenc1]

/cc @davidvossel

[davidvossel]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: davidvossel, orenc1

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[orenc1]

/retest

[orenc1]

INFO[2023-09-27T16:16:01Z] Step e2e-kubevirt-aws-ovn-gather-aws-console failed after 30m4s.
the tests themselves passed.
/test e2e-kubevirt-aws-ovn

[openshift-ci]

@orenc1: all tests passed!

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