[FIXED] Intermittent failing test
[FIXED] Intermittent failing test

Added the sleep back in to TestAuthorizationTimeout which got removed in #493.
This was causing the test to fail intermittently, though it would
usually pass on Travis CI or with the -race flag since these slowed it
down enough.

wallyqs/gnatsd,wallyqs/gnatsd,nats-io/gnatsd,nats-io/gnatsd,apcera/gnatsd,apcera/gnatsd