Application Credential support

[Deydra71]

Jira: OSPRH-20525

This PR adds end-to-end support for consuming Keystone ApplicationCredentials (AC) in the Manila operator, enabling Manila API pods to use AC-based authentication when available.

API changes:

Adds an optional authentication field to the Manila API CR:

spec.auth.applicationCredentialSecret — name of the Secret that contains the Keystone Application Credential ID and Secret (AC_ID and AC_SECRET).

Reconcile behavior:

Reads spec.auth.applicationCredentialSecret
Attempts to load AC_ID / AC_SECRET from the referenced Secret (via the Keystone helper).
If the secret is missing or incomplete, it falls back to password authentication (the AppCred auth is optional, not an error).

• Once the AC Secret is ready with valid AC_ID and AC_SECRET fields, templates AC credentials into Manila configuration
• Computes hash of Secret contents and stores in configVars to trigger rolling updates when credentials rotate

Depends-On: openstack-k8s-operators/keystone-operator#567

[openshift-ci]

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[softwarefactory-project-zuul]

Merge Failed.

This change or one of its cross-repo dependencies was unable to be automatically merged with the current state of its repository. Please rebase the change and upload a new patchset.
Warning:
Error merging github.com/openstack-k8s-operators/keystone-operator for 567,560a7f552956fc9c80fece28fc7e7b01b59c2274

[openshift-ci]

@Deydra71: 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/manila-operator-build-deploy-kuttl	8dbb266	link	true	/test manila-operator-build-deploy-kuttl

Full PR test history. Your PR dashboard.

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[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/8409bdddf95b405d9c5c526f4bdb10ff

❌ openstack-k8s-operators-content-provider FAILURE in 14m 38s
⚠️ manila-operator-kuttl SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider
⚠️ manila-operator-tempest SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/a987ce80e4954ea0b80cf0e569bd632e

❌ openstack-k8s-operators-content-provider FAILURE in 12m 10s
⚠️ manila-operator-kuttl SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider
⚠️ manila-operator-tempest SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/47ed39066edd47feb0b57495752fb931

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 02m 47s
❌ manila-operator-kuttl FAILURE in 31m 11s
❌ manila-operator-tempest RETRY_LIMIT in 8m 03s

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/676b75e021e84d3a980506f946831dbb

✔️ openstack-k8s-operators-content-provider SUCCESS in 29m 05s
❌ manila-operator-kuttl NODE_FAILURE Node request 099-0008115491 failed in 0s
❌ manila-operator-tempest NODE_FAILURE Node request 099-0008115492 failed in 0s