Support Redis clusters as Tomcat session backend

[yolabingo]

User Story

As a dotCMS administrator,
I want to be able to use a Redis cluster for dotCMS session storage,
so I can maximize availability

Acceptance Criteria

Current Tomcat session storage supports connecting to a Redis single-node instance only. FR is to support connecting to either a single-node Redis server or to multiple Redis servers in a cluster.

Presumably we would configure using comma-separated Redis hosts
TOMCAT_REDIS_SESSION_HOST=10.1.1.10,10.1.1.20,10.2.2.30

Question - what should be the behavior if one of the Redis nodes becomes unavailable?

Proposed Objective

Core Features

Proposed Priority

Priority 3 - Average

External Links... Slack Conversations, Support Tickets, Figma Designs, etc.

An on-prem customer found this issue which lead to this feature request https://dotcms.freshdesk.com/a/tickets/28886

Assumptions & Initiation Needs

No response

Quality Assurance Notes & Workarounds

No response

Sub-Tasks & Estimates

No response