MB-100: add rebalance-out config with 1 ddoc

Change-Id: I7a4c1cef74fbb9ed7341f85d116a948423f2726b
Reviewed-on: http://review.couchbase.org/24029
Reviewed-by: Pavel Paulau <pavel.paulau@gmail.com>
Tested-by: Pavel Paulau <pavel.paulau@gmail.com>