Discovery YAML. Do not implicitly append $index (#9315)

Require it explicitly. Makes it easier to understand and matches the style of other values

Questionable YAML changes (either broken before or now broken):
secureplatform: haStatCode
ptp600: receiveModulationMode

DO NOT DELETE THIS TEXT

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doc/Developing/Sensor-State-Support.md

@@ -58,7 +58,7 @@ modules:
                 -
                     oid: dryContactSensorTable
                     value: dryContactSensorValue
-                    num_oid: .1.3.6.1.4.1.5528.100.4.2.1.1.2.
+                    num_oid: '.1.3.6.1.4.1.5528.100.4.2.1.1.2.{{ $index }}'
                     descr: dryContactSensorLabel
                     index: 'dryContactSensor.{{ $index }}'
                     state_name: dryContactSensor
@@ -69,7 +69,7 @@ modules:
                 -
                     oid: doorSwitchSensorTable
                     value: doorSwitchSensorValue
-                    num_oid: .1.3.6.1.4.1.5528.100.4.2.2.1.2.
+                    num_oid: '.1.3.6.1.4.1.5528.100.4.2.2.1.2.{{ $index }}'
                     descr: doorSwitchSensorLabel
                     index: 'doorSwitchSensor.{{ $index }}'
                     state_name: doorSwitchSensor
@@ -80,7 +80,7 @@ modules:
                 -
                     oid: cameraMotionSensorTable
                     value: cameraMotionSensorValue
-                    num_oid: .1.3.6.1.4.1.5528.100.4.2.3.1.2.
+                    num_oid: '.1.3.6.1.4.1.5528.100.4.2.3.1.2.{{ $index }}'
                     descr: cameraMotionSensorLabel
                     index: 'cameraMotionSensor.{{ $index }}'
                     state_name: cameraMotionSensor
@@ -91,7 +91,7 @@ modules:
                 -
                     oid: otherStateSensorTable
                     value: otherStateSensorErrorStatus
-                    num_oid: .1.3.6.1.4.1.5528.100.4.2.10.1.3.
+                    num_oid: '.1.3.6.1.4.1.5528.100.4.2.10.1.3.{{ $index }}'
                     descr: otherStateSensorLabel
                     index: '{{ $index }}'
                     state_name: otherStateSensorErrorStatus