workunits/rados/test-clay-profiles: Add tests for CLAY profile configurations

workunits/rados/test-clay-profiles: Add tests for CLAY profile configurations

Introduced a test script to validate boundary cases and invalid configurations
for CLAY erasure code profiles.
Scenarios include:
  - Testing valid and invalid ranges for decoding threshold (`d`).
  - Verifying total chunk limits (`k + m + nu <= 254`).
  - Handling invalid parameter combinations for `k`, `m`, and unsupported techniques.
Ensures robustness and correctness of the CLAY profile creation logic.

This script helps identify issues with configuration validation and enforces documented constraints.

Signed-off-by: Nitzan Mordechai <nmordech@redhat.com>