Consistent naming with the watchdog family (system_watchdog, docker_watchdog).
File renamed, all RM_ config variables and internal references updated to RW_
across master.conf, master_host1.conf, common.sh, docker_watchdog.sh,
system_watchdog.sh, watchdog_orchestrator.sh, and sunday_morning_coffee_report.sh.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
