feat: Rest sensor support for 9.10 and below

conf/rest/9.10.0/sensor.yaml

@@ -0,0 +1,25 @@
+name:             Sensor
+query:            api/private/cli/system/node/environment/sensors
+object:           environment_sensor
+
+counters:
+  - ^^node  => node
+  - ^^name  => sensor
+  - ^type   => type
+  - ^warn_hi  => warning_high
+  - ^warn_low   => warning_low
+  - ^discrete_state  => discrete_state
+  - ^discrete_value  => discrete_value
+  - ^state  => threshold_state
+  - ^units => unit
+  - value  => threshold_value
+  - crit_hi => critical_high
+  - crit_low  => critical_low
+
+plugins:
+  - LabelAgent:
+    value_to_num: # metric label zapi_value rest_value `default_value`
+      - status threshold_state normal normal `0`
+
+export_options:
+  include_all_labels: true

conf/rest/default.yaml

@@ -18,3 +18,4 @@ objects:
   Qtree:            qtree.yaml
   Quota:            quota.yaml
   Shelf:            shelf.yaml
+  Sensor:           sensor.yaml