[Xon] Redis Cache v2.17.2

• Fix high availability support where css updates would be sent to a possible readonly replica instead of the writable instance

NA

• High avaliability config default change:
  • Change default value for retry_reads_on_primary config option to true as this guards against unexpected replication delays
• Remove unexpected differences for XF2.2 and XF2.3 support (only tested on XF2.2)
• When displaying redis version, include the redis varaint type.
  • Known variants are keydb & dragonflydb.
  • Dragonflydb does not appear to support IO stats at the moment

• Fix helper code to expire/purge redis keys did not support non-main cache backends.
  • If using a separate caching backend for css, old styling was not actively expired as expected, resulting in higher memory usage
  • If 3rd party code uses expireCacheByPattern/purgeCacheByPattern function, the new nullable 'cache' parameter should be used

• Update credis library
• Fix possible php 8.1 compatibility issue

• Display maximum memory and maximum memory policy in admincp redis status information block for troubleshooting purposes

• Fix "call to a member function setRedisConnector() on null" when using a non-default advanced configuration option

• Remove displaying if Lua is configured or not, and remove the Lua enable/disable option.
  • Lua support was first added to redis v2.6.0, and this add-on required redis v3
• Rework caching provider code in preparation for XenForo 2.3
  • XF have documented they are switching from Doctrine/Cache to Symfony/Cache
  • I have not tested this on XF2.3, and have coded against the public interfaces of the Symfony/Cache package.
  • A future release may be required for full XF2.3 compatibility.

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