find_address_timeout removed: why?

[dpmccabe]

Describe the issue:

The find_address_timeout argument was removed from ecs.Task in 7c84ad7 with no apparent replacement.

Minimal Complete Verifiable Example:

Task(find_address_timeout=180, ...)

Anything else we need to know?:

If specifying this argument is no longer the correct way to prevent timeouts, then what is? That commit did not update any documentation regarding this logic.