Correct labels for rx/tx power for fs.com switches (librenms#18334)

* Correct labels for rc/tx power for fs.com switches

* Update fs-centec_s5850-48s2q4c.json

---------

Co-authored-by: Neil Lathwood <gh+n@laf.io>

Author: sb-relaxt-at

includes/discovery/sensors/dbm/fs-centec.inc.php

@@ -22,7 +22,7 @@
                 'sensor_oid' => ".1.3.6.1.4.1.52642.1.37.1.10.6.1.5.$ifIndex",
                 'sensor_index' => "rx-$ifIndex.$channel",
                 'sensor_type' => 'fs-centec',
-                'sensor_descr' => "$ifName:$channel xcvr TX power",
+                'sensor_descr' => "$ifName:$channel xcvr RX power",
                 'sensor_divisor' => 1,
                 'sensor_multiplier' => 1,
                 'sensor_limit_low' => $current['FS-SWITCH-V2-MIB::receivepowerLowAlarmThreshold'] ?? null,
@@ -47,7 +47,7 @@
                 'sensor_oid' => ".1.3.6.1.4.1.52642.1.37.1.10.5.1.5.$ifIndex",
                 'sensor_index' => "tx-$ifIndex.$channel",
                 'sensor_type' => 'fs-centec',
-                'sensor_descr' => "$ifName:$channel xcvr RX power",
+                'sensor_descr' => "$ifName:$channel xcvr TX power",
                 'sensor_divisor' => 1,
                 'sensor_multiplier' => 1,
                 'sensor_limit_low' => $current['FS-SWITCH-V2-MIB::transpowerLowAlarmThreshold'] ?? null,

tests/data/fs-centec_s5850-48s2q4c.json

@@ -11585,7 +11585,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.6.1.5.50",
                     "sensor_index": "rx-50.0",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:0 xcvr TX power",
+                    "sensor_descr": "eth-0-50:0 xcvr RX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11610,7 +11610,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.6.1.5.50",
                     "sensor_index": "rx-50.1",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:1 xcvr TX power",
+                    "sensor_descr": "eth-0-50:1 xcvr RX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11635,7 +11635,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.6.1.5.50",
                     "sensor_index": "rx-50.2",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:2 xcvr TX power",
+                    "sensor_descr": "eth-0-50:2 xcvr RX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11660,7 +11660,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.6.1.5.50",
                     "sensor_index": "rx-50.3",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:3 xcvr TX power",
+                    "sensor_descr": "eth-0-50:3 xcvr RX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11685,7 +11685,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.5.1.5.50",
                     "sensor_index": "tx-50.0",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:0 xcvr RX power",
+                    "sensor_descr": "eth-0-50:0 xcvr TX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11710,7 +11710,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.5.1.5.50",
                     "sensor_index": "tx-50.1",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:1 xcvr RX power",
+                    "sensor_descr": "eth-0-50:1 xcvr TX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11735,7 +11735,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.5.1.5.50",
                     "sensor_index": "tx-50.2",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:2 xcvr RX power",
+                    "sensor_descr": "eth-0-50:2 xcvr TX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,
@@ -11760,7 +11760,7 @@
                     "sensor_oid": ".1.3.6.1.4.1.52642.1.37.1.10.5.1.5.50",
                     "sensor_index": "tx-50.3",
                     "sensor_type": "fs-centec",
-                    "sensor_descr": "eth-0-50:3 xcvr RX power",
+                    "sensor_descr": "eth-0-50:3 xcvr TX power",
                     "group": "transceiver",
                     "sensor_divisor": 1,
                     "sensor_multiplier": 1,