feat: add optimized config from ddev/ddev-redis-7

[stasadev]

The Issue

We want to consolidate all configs in one place.

This PR makes ddev/ddev-redis-7 obsolete.

How This PR Solves The Issue

• Adds ddev dotenv set .ddev/.env.redis --redis-optimized=true
• Adds extra docker-compose configs to .ddev/docker-compose.redis_extra.yaml
• Adds tests for --redis-optimized=true

Important

The difference is in the password: ddev/ddev-redis-7 uses the password redis and I use an empty password.

Manual Testing Instructions

Review https://github.com/ddev/ddev-redis/blob/20250424_stasadev_redis-7/README.md

ddev dotenv set .ddev/.env.redis --redis-optimized=true
ddev add-on get https://github.com/ddev/ddev-redis/tarball/20250424_stasadev_redis-7
ddev restart

# see config files from ddev/ddev-redis-7
ls -la .ddev/redis

# see changed file
cat .ddev/redis/redis.conf

# run some redis command
ddev redis-flush

# or "rm -f .ddev/.env.redis"
ddev dotenv set .ddev/.env.redis --redis-optimized=false
ddev add-on get https://github.com/ddev/ddev-redis/tarball/20250424_stasadev_redis-7
ddev restart

# see only one redis.conf
ls -la .ddev/redis

# see original file
cat .ddev/redis/redis.conf

# run some redis command
ddev redis-flush

Automated Testing Overview

Release/Deployment Notes