nova05: follow up changes

[bogdando]

• Add cross-site routes/GWs

  For all nova05epsilon's NADs, NetConfig subnets, host-level NNCP routes add missing cross-site DCN routes,
  and gateways.

  Previsourely those were tested in ci-framework jobs overlays but the base DT example was missing those
  CHANGEME templates.

• Add SNO Swift fix hook for Ceph RGW

• Ext net for tests accessing VMs via FIP

  Add external NAD definition with VLAN to DT nncp/values.yaml.
  Update scenario-vars.yaml with external NAD for Tempest access to FIP.

• Add automation mocks for CI

• Fix telemetry spec and kustomize chain for SNO

  The DT-level kustomization was missing service-values replacements
  (telemetry, nova, glance, ovn, extraMounts), so the examples kustomize
  build produced base defaults instead of DT-specific config. This caused
  metricStorage.enabled=false and missing alertmanagerConfig on the
  deployed OSCP.

  Additionally, pvcStorageClass was hardcoded to "local-storage" but SNO
  uses LVMS ("lvms-local-storage"), and alertmanager defaulted to 2
  replicas which cannot schedule on a single node due to required
  pod anti-affinity.

• Align the kustomization layers with nova04delta:

  • dt/nova/nova05epsilon/kustomization.yaml: add service-values
    replacements matching nova04delta pattern
  • Remove deplicated replacements for
    dt/nova/nova05epsilon/control-plane/kustomization.yaml
  • examples/.../control-plane/service-values.yaml: add full DT-specific
    data (telemetry, nova, glance, ovn, extraMounts)
  • Set pvcStorageClass to lvms-local-storage and alertmanagerConfig
    replicas to 1 for SNO compatibility
  • update control-plane.md

• Separate pre and post ceph OSCP configs

  HCI uses edpm post ceph to also patch the OSCP which looks suboptimal.

  Separate this into a two steps:

  • make post-ceph nodeset layer handling EDPM resources only (NodeSet,
    Services, Secrets, ConfigMap) - remove OSCP layer resources
  • add control-plane-post-ceph layer for OSCP with Glance RBD + Ceph
    extraMounts and secret config. Instead of re-including lib/control-plane
    (which required network-values duplication)
    provide only required values for lib/control-plane/base.
  • update README.md stages list from 4 to 6 steps, automation step
    count from 9 to 10
  • add note for defferred Ceph config for control-plane.md
  • add control-plane post-ceph doc for the dedicated Ceph
    control-plane update stage
  • remove control-plane update references for
    dataplane-post-ceph.md, add prerequisite for
    control-plane-post-ceph
  • add control-plane-post-ceph stage between pre-ceph deployment and
    post-ceph nodeset ini automation vars

Depends-on: openstack-k8s-operators/ci-framework#3773
Related: OSPRH-30706

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[fultonj]

Perhaps add depends-on: https://github.com/openstack-k8s-operators/ci-framework/pull/3773?

We cannot merge this until the above provides ../../hooks/playbooks/fix_swift_endpoint.yml

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[centosinfra-prod-github-app]

This change depends on a change that failed to merge.

Change openstack-k8s-operators/ci-framework#3773 is needed.

[bogdando]

Finally works with my local testing

[bogdando]

downstream testing completed for this DT and dependency patches, it is good to go

[evallesp]

/lgtm

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[openshift-ci]

New changes are detected. LGTM label has been removed.

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[bogdando]

@abays the deduplication patch worked for my testing