* Properly compute auto-auth token
* Use inmem sink to track auto-auth token
* update debug statement
* Only add inmem sink if using auto-auth token is allowed
The result will still pass gofmtcheck and won't trigger additional
changes if someone isn't using goimports, but it will avoid the
piecemeal imports changes we've been seeing.
This allows it to authenticate once, then exit once all sinks have
reported success. Useful for things like an init container vs. a
sidecard container.
Also adds command-level testing of it.
Vishal Nayak