Fix rsync SST method to transfer binlog state to the joiner

In rsync galera SST method, if the nodes are started with log-bin and log-
slave-updates, the donor binlog files are not transferred to the joiner. As
a result of which, once the SST is complete and the nodes are synced, the
binlog states may vary between the two nodes and thus, same transaction
can get different GTIDs on different nodes.