Move our archival storage bucket to 'archive' class

[yuvipanda]

Our storage archiver now moves home directories into this GCS bucket.

It's currently set to 'standard' storage class, but that offers us a level of performance that we just do not need. These are barely accessed, and we keep them for a while now. If we switch them to the 'archive' class, it drops our storage pricing by about 94%
(see https://cloud.google.com/storage/pricing).

So let's do that?

[balajialg]

@yuvipanda Looks like a good optimization from a cost perspective and I am in! Thanks for thinking about this :)

@felder Should chime in with his verdict here as this affects his day-to-day to a certain extent!

[felder]

@yuvipanda like a good idea. How about I setup a lifecycle rule to transition all objects in the bucket to the archive storage class after 30 days? That way if necessary I have a window to remove them before we end up with a 365 day commitment.

[yuvipanda]

@felder great idea! Lmk if I can help :)

[felder]

Did a quick test to make sure signed urls could be created and fetched if an object was in archive storage class.

They can be.

Setup a bucket lifecycle rule to transition all objects over 30 days old to the archive storage class.