Print the node's info to log for the REST backend to read.

def logNodeInfo(self):
        """
        Print the node's info to log for the REST backend to read.
        """
        self.nodeInfo['data'] = self.collectNodeInfo()

        with closing(open(os.path.join(self.ledger_dir, 'node_info'), 'w')) \
                as logNodeInfoFile:
            logNodeInfoFile.write(json.dumps(self.nodeInfo['data']))