Migrate DRA tests from v1beta1 to v1 API

[asahay19]

Starting from OpenShift 4.21 (Kubernetes 1.34), beta APIs are disabled by default.This PR migrates all DRA test code from resource.k8s.io/v1beta1 to resource.k8s.io/v1

Changes include:

• Updated all Go imports and client calls
• Restructured DeviceRequest to use the new Exactly field
• Updated Device struct access (removed Basic field)
• Migrated YAML test manifests to v1 API
• Updated JSON configs in MPS and time-slicing tests

Tested against: OpenShift 4.21+ cluster with beta APIs disabled
Relates to: #29842

[openshift-ci-robot]

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[openshift-ci]

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[openshift-ci]

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Test name	Commit	Details	Required	Rerun command
ci/prow/verify	cf22e86	link	true	/test verify

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