CBQE-0: Fix src_nodes and dest_nodes list

Change-Id: Icd66108aaf1fa3e4f8611e1ec0cd268af0e1d2d8
Reviewed-on: http://review.couchbase.org/31058
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>