[bitnami/redis] Add TLS support

[joancafom]

Traffic between cluster nodes can now be secured with the use of TLS.
Signed-off-by: joancafom [email protected]

Description of the change
Included envars and configuration so as to make the nodes use TLS.

Benefits
Traffic between nodes can be secured

Possible drawbacks
TLS and Prometheus Metrics can not work together. This is an outgoing issue for Redis Metrics Exporter.

Applicable issues

NA

Additional information

Checklist

• Chart version bumped in Chart.yaml according to semver.
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [bitnami/chart])
• If the chart contains a values-production.yaml apart from values.yaml, ensure that you implement the changes in both files

⚠️ Keep in mind that if you want to make changes to the kubeapps chart, please implement them in the kubeapps repository. This is only a synchronized mirror.

[andresbono]

LGTM

[miguelaeh]

LGTM!
Please run the proper CI/CD job to update the image tags.

[bitnami-bot]

I have just updated the bitnami images with the latest known immutable tags:

• "docker.io/bitnami/redis:6.0.5-debian-10-r1"
• "docker.io/bitnami/redis-exporter:1.6.1-debian-10-r27"
• "docker.io/bitnami/redis-sentinel:6.0.5-debian-10-r0"
• "docker.io/bitnami/minideb:buster"
• "docker.io/bitnami/minideb:buster"