Enable System Monitor SNMP Traps

Notes: In the following use case:

The threshold_upper, threshold_lower, and cell_signal_strength_alert items are applicable only to cellular devices.
The millivolt_lower and millivolt_upper items are not present for the CM8000.

monitoring/alerts/power power_supply_voltage_alert
  millivolt_lower 11000
  millivolt_upper 13000
  snmp
    enabled true
  up
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monitoring/alerts/networking cell_signal_strength_alert
  enabled true
  threshold_lower 33
  threshold_upper 66
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monitoring/alerts/system
  authentication_alert
    enabled true
  up
  config_change_alert
    enabled true
  up
  temperature_alert
    enabled true
    threshold_lower 35
    threshold_upper 67
  up
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