Add new CNV test steps and chain for IBM Fusion Access

[amp-rh]

Add comprehensive CNV (Container Native Virtualization) integration test steps for IBM Fusion Access shared storage testing.

Dependencies

• Depends on: Rename fusion-access to ibm-fusion-access in step registry and CI config #72015 (rename PR) - merge that first
• Required by: Add CNV CI configurations for IBM Fusion Access OCP 4.20/4.21 #72017 (CNV CI configs)

New Step Components

Step	Purpose
create-shared-filesystem/	Creates IBM Storage Scale filesystem for CNV shared storage
configure-cnv-shared-storage/	Configures StorageClass and PVCs for CNV
test-cnv-shared-storage/	Tests PVC operations with JUnit reporting
test-vm-lifecycle/	Tests VM create/start/stop/delete operations
test-vm-migration/	Tests live VM migration between nodes
test-vm-snapshots/	Tests VM snapshot and restore operations
verify-shared-storage/	Verifies shared storage functionality across nodes
cnv-test-chain/	Orchestrates all CNV tests in sequence

Chain Updates

• environment-setup-chain: Updated documentation with IBM branding
• ebs-integration-chain: Updated documentation with IBM branding

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: amp-rh
Once this PR has been reviewed and has the lgtm label, please assign rabin-io for approval. For more information see the Code Review Process.

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Needs approval from an approver in each of these files:

• ci-operator/config/RedHatQE/interop-testing/OWNERS
• ci-operator/jobs/RedHatQE/interop-testing/OWNERS
• ci-operator/step-registry/interop-tests/OWNERS [amp-rh]

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[openshift-ci-robot]

[REHEARSALNOTIFIER]
@amp-rh: the pj-rehearse plugin accommodates running rehearsal tests for the changes in this PR. Expand 'Interacting with pj-rehearse' for usage details. The following rehearsable tests have been affected by this change:

Test name	Repo	Type	Reason
pull-ci-RedHatQE-interop-testing-master-ibm-fusion-access-operator-ocp4.20-lp-interop-images	RedHatQE/interop-testing	presubmit	Presubmit changed
periodic-ci-RedHatQE-interop-testing-master-ibm-fusion-access-operator-ocp4.20-lp-interop-ibm-fusion-access-operator-ipi-ocp420	N/A	periodic	Periodic changed

Prior to this PR being merged, you will need to either run and acknowledge or opt to skip these rehearsals.

Interacting with pj-rehearse

Comment: /pj-rehearse to run up to 5 rehearsals
Comment: /pj-rehearse skip to opt-out of rehearsals
Comment: /pj-rehearse {test-name}, with each test separated by a space, to run one or more specific rehearsals
Comment: /pj-rehearse more to run up to 10 rehearsals
Comment: /pj-rehearse max to run up to 25 rehearsals
Comment: /pj-rehearse auto-ack to run up to 5 rehearsals, and add the rehearsals-ack label on success
Comment: /pj-rehearse list to get an up-to-date list of affected jobs
Comment: /pj-rehearse abort to abort all active rehearsals
Comment: /pj-rehearse network-access-allowed to allow rehearsals of tests that have the restrict_network_access field set to false. This must be executed by an openshift org member who is not the PR author

Once you are satisfied with the results of the rehearsals, comment: /pj-rehearse ack to unblock merge. When the rehearsals-ack label is present on your PR, merge will no longer be blocked by rehearsals.
If you would like the rehearsals-ack label removed, comment: /pj-rehearse reject to re-block merging.