Update resource limits as per #3212

[zephraph]

Fixes #3212

vCPUs: 32 -> 64
memory: 64 GiB -> 256 GiB
disk size: 1 TiB -> 1023 GiB

[david-crespo]

The fact that no tests fail with this change is a little concerning!

[zephraph]

The tests uses the constants to pivot off of. I don't see the value of hardcoding the limits in the tests.

So you have situations like this:

    let disk_size =
        ByteCount::try_from(MAX_DISK_SIZE_BYTES + (1 << 30)).unwrap();

where we use the limits to create a value over the limit to ensure that it fails.

[david-crespo]

Ah, that makes sense. Cool!