add Opensearch\Elasticsearch monitoring (#14053)

* add new poller

* add a missing ;

* formatting cleanup

* graph stuff and metrics move

* add rrd name

* clean up metrics/rrd def

* more metric/rrd def cleanup

* cleanup

* add basic opensearch graphs

* add opensearch to apps.inc.php

* begin work on opensearch app page

* formatting cleanup

* add translog graphs

* add a missing graph

* fix pending tasks

* add the ability to fetch the saved cluster name

* add fetching the cluster name

* correct the opensearch comment

* add combined shard stats

* add indexing graphs

* correct graph name

* correct some units as being per second

* add more graphs

* add more items for graph sets

* cleanup of units and naming... also more graphs

* more graph stuff

* change the RRD def again and define a few more graphs

* finish basic graph sets

* more graph stuff

* another rrd def change

* add more graphs

* add some more graph sets

* correct unit for c_task_max_in_time

* more graph stuff

* more graph stuff

* correct the unit

* add missing tw_time and another rrd def change

* another unit change

* add trc graphs

* more graph stuff

* add tseg graphs

* add all shards graph to both cluster items

* more graph stuff

* update opensearch app page

* add Opensearch\Elasticsearch app

* add opensearch tests

* run php-cs-fixer on two files

* add alert examples for checking cluster status

* remove an item that was accidentally added as a metric in the test but is not

* derp! thanks jellyfrog

* make it come up as Elisticsearch\Opensearch in the webui

* no longer use components, but app_data, for cluster name change

* update the web side for opensearch for using app_data

* style fix

* update opensearch for new app data stuff

* update to the new Application model

* update poller and device app page for ES/OS

* style cleanup

* update graphs

* test fix

* more test cleanup

* Update alert_rules.json

* begin work on breaking out the RRDs

* update all non-multi rrd graphs for opensearch

* update time_all

* add a unass shards graph

* correct rrd name

* should all be good now

* add missing tm stats

* Un Assigned -> Unassigned

* style cleanup

* another style fix

* remove cluster_name from saved metrics as it is not a metric

Co-authored-by: Tony Murray <murraytony@gmail.com>
Co-authored-by: Jellyfrog <Jellyfrog@users.noreply.github.com>

LibreNMS/Util/StringHelpers.php

@@ -64,6 +64,7 @@ class StringHelpers
             'ntp-client' => 'NTP Client',
             'ntp-server' => 'NTP Server',
             'opengridscheduler' => 'Open Grid Scheduler',
+            'opensearch' => 'Elasticsearch\Opensearch',
             'os-updates' => 'OS Updates',
             'php-fpm' => 'PHP-FPM',
             'pi-hole' => 'Pi-hole',