S3 Link Redirect System

[Schnitzel]

This is a follow up for #999

Currently the link shown in the Lagoon UI is directly linking to S3.
With the work done in this ticket, the link will point to a Lagoon UI URL, which will create a redirect to the S3 bucket with a validity of 5 seconds.

[bomoko]

After a quick DX chat, we're questioning whether this will work for all cases (without having some kind of fallback functionality). Needs to be discussed in more depth.

The lagoon-cli might also complicate this.

[shreddedbacon]

Just because I saw this was recently updated. The ability to do custom restore locations could also add some complications to the mix.

[tobybellwood]

Current status (for clarification) - the download link in the UI is valid for 5 minutes, is signed by the file host, and is available to anyone who has been shared that link.

[tobybellwood]

Proposed solution - reduce the timeout to 1 minute, but start the timer on the click of the download button instead of the page load.

[seanhamlin]

Some customers do use the direct S3 link to download the backup into a pod for example. So being able to access the raw signed URL would be ace. Having a 1 minute validity will be OK.

[rocketeerbkw]

Created follow up issues #3367 uselagoon/lagoon-ui#91 uselagoon/lagoon-ui#92