Possibility to add a redis password

[msbt]

Describe the bug
When using redis as cache/session driver, one might need to add a password for the redis connection, there is no variable in the config or any mention in the db file

Steps To Reproduce
Steps to reproduce the behavior:

1. Change drivers to redis
2. Look for the place to put the password

Expected behavior
Either have a REDIS_PASSWORD variable or use something like REDIS_SERVERS=:${REDIS_PASSWORD}@${REDIS_HOST}:${REDIS_PORT}

Your Configuration (please complete the following information):

• Exact BookStack Version (Found in settings): v0.25.1
• PHP Version: 7.2
• Hosting Method (Nginx/Apache/Docker): apache in a docker container behind nginx reverse proxy

Additional context
Hope I didn't miss something

[ssddanbrown]

Hope I didn't miss something

No, Just don't used redis that often myself so did not know it could be commonly used with a password.

Thanks for reporting, Should be a fairly quick thing so have marked for the next minor release.

[msbt]

Great, thanks!

[ssddanbrown]

The new format will be HOST:PORT:DATABASE:PASSWORD, Where :PASSWORD is optional.
Just about to merge in the code updates for this, Will be in the next patch release.

Notes for release

Previously specifying multiple redis servers did not actually seem to do anything, Only the first was used. Code is now updated to auto-use a cluster if more than one server is provided.

The REDIS_CLUSTER env option has now been removed.