Do not log timeout errors on upload and receive connections

The Upload and Receive SSH commands were turning
InterruptedIOExceptions into Failures which get logged by
BaseCommand.  Instead, let the InterruptedIOExceptions trickle
up and die quietly in BaseCommand where they are captured.

Change-Id: I8e9dcde9f2eb616b3ab3130bbbbd218b062d4be8
3 files changed