devices - Ciena RLS 6500 (#15909)

* rls definition
* Adding discovery
* Temp Sensor Discovery
* files for discovery
* Adding and updating MIBS
* Add snmpsim
* Modified yaml for unit test
* phpfmt format
* ci changes
* fixing temp sensor
* fix json
* db schema out of date causing bad snmpsim json
* changed temperature discovery to php
* With updated snmpsim data
* index_string restored, YAML for temperature
* style
* Fixed index_string usage in JUNOS files
* Update YamlDiscovery.php
Allow filtering on "index" in skip_values
* Move DBM to YAML as well
* style
* schema update
* Slot XX Yyyyyy
remove unwanted dot
* matching tests
* schema, round 2
* states in YAML
* put temp sensor back in yaml
* enable default poll and discovery modules
---------

Co-authored-by: PipoCanaja <38363551+PipoCanaja@users.noreply.github.com>

LibreNMS/Device/YamlDiscovery.php

@@ -188,6 +188,11 @@ class YamlDiscovery
             $variables = [
                 'index' => $index,
                 'count' => $count,
+                // we compute a numOid compatible version of index
+                // string length followed by ASCII of each char.
+                'index_string' => implode('.', array_map(function ($index) {
+                    return strlen($index) . '.' . implode('.', unpack('c*', $index));
+                }, explode('.', $index))),
             ];
             foreach (explode('.', $index) as $pos => $subindex) {
                 $variables['subindex' . $pos] = $subindex;
@@ -378,6 +383,8 @@ class YamlDiscovery
                 if (isset($skip_value['device'])) {
                     // field from device model
                     $tmp_value = \DeviceCache::getPrimary()[$skip_value['device']] ?? null;
+                } elseif ($skip_value['oid'] == 'index') {
+                    $tmp_value = $index;
                 } else {
                     // oid previously fetched from the device
                     $tmp_value = static::getValueFromData($skip_value['oid'], $index, $yaml_item_data, $pre_cache);