Return ';'-delimited hostlist (was None)
Return ';'-delimited hostlist (was None)

Change-Id: I8ff568c10e45c957d02fde44daf7d8b115557deb
Reviewed-on: http://review.couchbase.org/26626
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@couchbase.com>
Tested-by: Mordechai Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>

couchbase/couchbase-python-client,mnunberg/couchbase-python-client,couchbase/couchbase-python-client,mnunberg/couchbase-python-client