Add new tests and scripts for SMO Slice Management and NBI Pluggable SBI

- Introduced `run_nbi_pluggable_sbi_test_v2.sh` to deploy and stream output from the v2 NBI to Pluggables to SBI pytest Job.
- Updated `zsm_test_job.yaml` to change monitored metric from PRE_FEC_BER to RECEIVED_POWER and increased collector duration.
- Added a new directory `test_SMO` containing scripts to test SMO slice intent endpoints, including a Python client and a Bash wrapper.
- Implemented `test_nbi_pluggable_sbi_v2.py` for end-to-end testing of NBI to Pluggables to SBI interactions.
- Updated `test_zsm_failure_notify_leaf.py` to ensure expected context and topology exist, with logging improvements.