CNV-67916: hypershift, kubevirt, add enhancement for IP management

[qinqon]

This enhancement proposes adding static IP address management (IPAM) capabilities to HyperShift when using the KubeVirt provider and the KubeVirt nodepool is not attached to default pod network using a multus layer2 network to replace it.

The implementation enables operators to define IP pools and network configurations that are automatically allocated to virtual machines during cluster provisioning. This functionality addresses the need for predictable, static network configuration in environments where DHCP is not available or desirable, particularly in on-premises and edge deployments.

https://issues.redhat.com/browse/CNV-67916

[openshift-ci]

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[openshift-ci-robot]

@qinqon: This pull request references CNV-67916 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the epic to target the "4.21.0" version, but no target version was set.

In response to this:

This enhancement proposes adding static IP address management (IPAM) capabilities to HyperShift when using the KubeVirt provider and the KubeVirt nodepool is not attached to default pod network using a multus layer2 network to replace it.

The implementation enables operators to define IP pools and network configurations that are automatically allocated to virtual machines during cluster provisioning. This functionality addresses the need for predictable, static network configuration in environments where DHCP is not available or desirable, particularly in on-premises and edge deployments.

https://issues.redhat.com/browse/CNV-67916

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[openshift-ci]

@qinqon: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/markdownlint	b6cb5a1	link	true	/test markdownlint

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[qinqon]

/cc @maiqueb

[qinqon]

/cc @orenc1