Add support for NVMe drives in smartmon.py

[technowhizz]

Adds support for collecting SMART metrics from NVMe drives with the use of pysmart and smartctl JSON output. Includes updates to the deployment playbooks, tests, and dashboards.

[gemini-code-assist]

Code Review

This pull request adds support for monitoring NVMe drives by integrating smartctl's JSON output into smartmon.py, removing the dependency on nvme-cli. The changes are comprehensive, covering Ansible playbooks, the monitoring script, tests, and Grafana dashboards. The implementation is generally robust, with good error handling and updated tests. However, I've identified a few issues that could impact monitoring coverage and data accuracy. A logic change in smartmon.py might cause some disks to be skipped from monitoring. Additionally, some Prometheus queries in the updated Grafana dashboards are missing necessary filters, which could lead to incorrect data aggregation and display. I have provided specific suggestions to address these points.

[dougszumski]

Thanks for pushing this forward @technowhizz! I haven't got round to trying it yet, but it looks like a good effort overall, well done