Fix monitoring role bugs and add health check, network latency, and disk space monitoring.
- Fix circular symlink (src and dest were identical)
- Fix force_apt_get on generic package module (split by OS family)
- Add missing become:yes on privileged tasks
- Add perforce_location defaults to prevent undefined variable errors
- Make case sensitivity check query live server via p4 info
- Remove redundant tasks already handled by install_p4prom.sh
- Remove unused handlers
- Add p4 health check probe (p4 info liveness and response time)
- Add network latency monitoring (ping commit server)
- Add disk space monitoring with configurable warn/crit thresholds