Patch through the error from NewReplicator
Patch through the error from NewReplicator

Normally this is pointless, because we test NewReplicator by
itself and we know that it works. However, if anything goes
pear shaped in the environment, like swift.conf is missing,
we want to know what it is, rather than guess.

Change-Id: I9488bd16dafc1b16d034bea963e4502c06988452

creiht/hummingbird,troubling/hummingbird,corystone/hummingbird,nadeemsyed/hummingbird,troubling/hummingbird,nadeemsyed/hummingbird,redbo/hummingbird,creiht/hummingbird,redbo/hummingbird,corystone/hummingbird