E2E image mode enablement for DPUs

[SamD2021]

This PR brings in all changes needed to fully build, provision and deploy the dpu operator on RHEL Image Mode.
It makes the microshift extra config more idempotent since many parts of the post step is already part of the image and fixes some parts of iso builder to allow for full automation. It also now uses Centos Stream boot iso the base for ISO Surgeon which means now any vendor should be able to bake their own ISO's on x86 targeting arm64 (Tested on IPU's for now). To use it I generally make a iso-builder.yaml like below and run it with -s pre:
Note: Does not really require a dpu apart for detecting the flavour of the dpu and could be used with a non dpu server after a few tweaks

clusters:
  - name: "microshift"
    api_vip: "192.168.122.99"
    ingress_vip: "192.168.122.101"
    network_api_port: "eno12409"
    kind: "iso"
    install_iso: "" # leaving it empty makes uses the default iso filename
    # install_iso: "./RHEL-DPU-CUSTOM-LATEST-20250730-aarch64.iso"
    kubeconfig: "/root/kubeconfig.microshift"
    masters:
      - name: "215-acc"
        node: "localhost"
        kind: "dpu"
        bmc:
          url: "wsfd-advnetlab215-intel-ipu-imc.anl.eng.bos2.dc.redhat.com"
        bmc_host:
          user: "root"
          password: "calvin"
          url: "wsfd-advnetlab215-drac.anl.eng.bos2.dc.redhat.com"
        dpu_host: "wsfd-advnetlab215.anl.eng.bos2.dc.redhat.com"
        ip: "172.16.3.16"
        mac: "10:2e:00:01:b1:f2"
    preconfig:
      - name: host_registries # formats the registry credentials in the authfile format, by default merges your cluster pull secret for access to registry.redhat.io
        registries:
          - registry_url: "quay.io"
            user: "sadasilv+ipu_kickstart"
            token: "REDACTED"
            auth_path: "/tmp/auth.json"
      - name: iso_builder
        organization_id: "REDACTED"
        activation_key: "REDACTED"
        iso_builder_auth_file: "/tmp/auth.json" # Uses the auth for private registry access and building
        image_mode_url: "docker://quay.io/sadasilv/rhel-image-mode-4-dpu:latest" # will build from current image mode dir and push to destination

[SamD2021]

This is related to changes in DPU Operator though it works independently then this when using our current package mode iso's:
openshift/dpu-operator#494