Axiom Driver: Renew auth token when or before it expires

[w-le]

In e2e testing I've found that the axiom auth token expires very quickly so I urgently added this really bad re-auth implementation so that the testing session could continue: 87f49d2

Are you able to add a proper, elegant fix for expired auth tokens?
e.g. if when receiving the token there is an expiry time, then our client should renew before that expiry time is reached.
Or, at the very least, api requests that result in an "Unauthorized" response should transparently attempt to re-authenticate at the client lib level instead of the driver level.