Migrate the MCE (Multicluster Engine) on ARO-HCP (Azure Red Hat OpenShift Hosted Control Plane) pipeline to use Kubernetes agents.

Objective:
Enable better resource utilization and eliminate workspace cleanup issues for MCE ARO-HCP testing.

Scope:
- Update MCE on ARO-HCP pipeline configuration to use Kubernetes agents
- Test ARO-HCP scenarios with K8s agent setup
- Verify workspace cleanup improvements
- Ensure ARO-HCP functionality remains intact

Acceptance Criteria:
- [ ] MCE on ARO-HCP pipeline successfully migrated to K8s agents
- [ ] ARO-HCP testing scenarios verified with K8s agent configuration
- [ ] Workspace cleanup issues resolved
- [ ] MCE functionality on ARO-HCP validated post-migration
- [ ] Resource utilization optimized for cloud-hosted testing

Dependencies:
- K8s agent configuration established
- Access to ARO-HCP testing systems

This task was created as part of Epic breakdown for ACM-26264. Generated by Claude Code.