20 minutes isn't enough time to transfer images

[lattwood]

20 minutes isn't enough time to transfer images, as evidenced by our failures to transfer images from SFO3 to NYC1.

packer-plugin-digitalocean/builder/digitalocean/step_snapshot.go

Line 101 in e33984b

client, 20*time.Minute); err != nil {

That needs to be raised or configurable, and is currently blocking image updates on our end.

[andrewsomething]

Good call @lattwood. We should make that configurable. Relatedly, this PR will initiate transfers in parallel and provide an option to not block until it completes: #126

[andrewsomething]

With the v1.3.0 release, there is now a transfer_timeout option. The default was also bumped up to 30 minutes. Additionally, you can set wait_snapshot_transfer to false to not block on transfer status at all if desired.

https://github.com/digitalocean/packer-plugin-digitalocean/releases/tag/v1.3.0