CBQE-0: rename a test replication_while_rebooting_a_non_master_destination_node -> replication_while_rebooting_a_non_master_src_dest_node

Change-Id: Idd62f6e2ebda31682cb7f23e97913ed27eb5c94f
Reviewed-on: http://review.couchbase.org/38171
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>