whereas ulsfo PDUs installed in T209101 are currently missing icinga phase monitoring checks (i.e. only ping checks)
Note that ulsfo does not have 3-phase power so it makes sense here to be different from eqiad/codfw. It would probably still make sense to have something to monitor that single phase, though.
@RobH related to T148541: Replace Torrus with Prometheus snmp_exporter for PDUs monitoring, I took a stab at adjusting the OIDs for phase monitoring on 3 phase sentry4 PDUs in https://gerrit.wikimedia.org/r/537646 please take a look when you get a chance