new sensors for siteboss OS + new sensor type: percentage (%) (#11958)

* split siteboss 530 and 550 into multiple OS

* add more sensors to siteboss550 and new Percent sensor

* fix contact closure event state values

* split os polling for siteboss to siteboss530 and siteboss550

* add test unit for siteboss550, rename test unit for siteboss to siteboss530

* refactor siteboss os polling to \Librenms\OS

* implement OSPolling to Sitebos550

* force save in pollOS() to keep custom sysName during polling

* updated unit test

* update device graphs

* remove pollOS and extra save()

* siteboss550 no longer extends OSPolling

* update siteboss550 test data

* update discoverOS() to match recent os discovery changes

* styleCI changes

* fix siteboss hardware discovery; add check to OS polling if os_group .inc file exists

* collapse siteboss to single OS, implement siteboss sensors in advanced discovery

* add siteboss unit tests

* removed unneeded OS disco defs

* styleCI changes

* more styleCI changes

* split siteboss os to siteboss530 and siteboss550

* split siteboss os to siteboss530 and siteboss550

* move php polling back into yaml

* keep original siteboss OS name

* resave snmp data for siteboss OS

* resave snmp data for siteboss550 OS

includes/html/pages/health.inc.php

@@ -59,6 +59,7 @@ $type_text = [
     'ber' => 'Bit Error Rate',
     'eer' => 'Energy Efficiency Ratio',
     'waterflow' => 'Water Flow Rate',
+    'percent' => 'Percent',
 ];
 
 $active_metric = basename($vars['metric'] ?? 'processor');