Allow EBS encryption

[mrbuk]

It would be great if concourse-up would support EBS encryption (for persistent and potentially also for ephemeral disks)

[danyoung]

We have a story in the icebox for this https://www.pivotaltracker.com/story/show/153282816

[evadinckel]

Hello @mrbuk,

Our team can confirm that this was previously implemented but we didn't update the github issue.
Please check your EBS volumes and confirm they are encrypted.

Thanks,
Eva

[crsimmons]

I just looked at this a little closer. There is no encryption on the director volumes. There is only encryption on ephemeral volumes for the web and workers - not on persistent.