Add comprehensive E2E tests that verify StorageClassOptions work correctly in a real cluster environment, including day-2 update scenarios.

Acceptance Criteria:

•  E2E test suite added to test/e2e/lvm_cluster_test.go:
  • Creation tests:
    • StorageClass created with Retain policy
    • StorageClass created with Immediate binding mode
    • StorageClass created with additional parameters and labels
  • Day-2 update tests:
    • StorageClass recreated when reclaimPolicy changes (verify UID changes)
    • StorageClass recreated when volumeBindingMode changes
    • StorageClass recreated when additionalParameters change
    • Labels updated without recreation (verify UID stays same)
  • Edge case tests:
    • Conflicting additionalParameters ignored
    • Existing PVCs continue working after SC recreation
•  Tests run successfully with make e2e
•  Tests cover both SNO and multi-node scenarios