PHP 8 fixes (#12528)

* port related errors

* more fixes

* fix storage count

* add tests for php8

* style

* only need not empty

* aix fixes....

* storage WIP

* fix aix discovering hrstorage
fix db test adding .gitkeep
fix os modules when discovery only

* fix aos processors wrong oid

* fix mempool number casting

* fix aos7 cpu

* use + 0 cast instead of floatval()

* more verbose error on invalid json

* remove invalid data in json

* actually fix the json

* correct json error fix

* cast_number() function
fix aruba-instant and aos6 bugs exposed by new function, probably more...

* fix a-f
fix inadequate sort for component data

* fix global port poll time

* fix mempools precent 0, route count, ntp const

* fix schleifenbauer liberal current usage

* further number casting refinement

* vrp

* fix tests

* fix arbos

* warn cleanups adjust to :: change

* fix ciena-sds

* fix drac

* fix dell-rpdu anddlink

* fix and improve arubaos
better error when getting an array in Processor

* fix atenpdu, add missing arubaos files

* aruba-instant to yaml
apparently I didn't need to do this, the diff just looks really odd
It did add ranged sub-index replacements

* docker app, was completely wrong... fixed

* fix sentry4 divide by 0...

* fixed root issue, remove check

* nicer cidr in ipv6 code

* remove bogus enuxus battery bank skip_values

* Fix InfluxDB tests

* remove extra import

* fix other style issues.

* influx "style" fixes

includes/helpers.php

@@ -105,3 +105,15 @@ if (! function_exists('array_pairs')) {
         return $pairs;
     }
 }
+
+/**
+ * Cast string to int or float.
+ * Returns 0 if string is not numeric
+ *
+ * @param string $number
+ * @return float|int
+ */
+function cast_number($number)
+{
+    return \LibreNMS\Util\Number::cast($number);
+}