feat(storage): add external s3 uri

[benjamin-texier]

See MEN-5280

Issue

In the self-hosted kubernetes version of Mender, you provide a way to set up S3 storage on minio.

Deployments only takes one variable for AWS_URI. This variable is used by Deployments itself to talk with minio and by IoT devices to fetch artifacts.

With only one URI, it is not possible to use mTLS to validate incoming connections (or you have to rebuild the mender-deployments image to add a client certificate in it).

Also, this requires connections between deployments and minio to be outbound of the cluster

Our modifications

The simplest way would be to have two endpoints, AWS_URI and AWS_EXTERNAL_URI:

• AWS_URI: connection between the service deployment and S3 storage
• AWS_EXTERNAL_URI: base URI for frontend and artifacts URIs sent to devices.

Example

Parameter	Description	Example value	Default
global.s3.AWS_URI	minio internal endpoint	http://minio:9000
global.s3.AWS_EXTERNAL_URI	minio external endpoint	https://mender.webdomain.com	{global.s3.AWS_URI}

Docker images

docker pull upciti/mender-deployments:latest