Update minimal and integration permissions

[ystros]

Disk resize and using private IPs need specific permissions, and are common use cases, so were added to the minimal permission doc.

Using service accounts for auth require a special set of permissions, as do using accelerators.

[#187935049]

[ystros]

We've made a corresponding PR to update the docs as well: https://github.com/cloudfoundry/docs-bosh/pull/845