fix possible over size exception when batch udp

Motivation:

UDP package size should <= 64K, So if we enable batch for write points
by UDP. it may involved the IO exception when we batch write too many
points:

"java.io.IOException: Message too long
"

Modifications:

write directly without batch for udp in batch processor.

Result:

1 avoid over size exception. If the exception occur. use should limit
point's content.

src/main/java/org/influxdb/impl/BatchProcessor.java

@@ -221,7 +221,9 @@ void write() {
           BatchProcessor.this.influxDB.write(batchPoints);
       }
       for (Entry<Integer, List<String>> entry : udpPortToBatchPoints.entrySet()) {
-          BatchProcessor.this.influxDB.write(entry.getKey(), entry.getValue());
+          for (String lineprotocolStr : entry.getValue()) {
+              BatchProcessor.this.influxDB.write(entry.getKey(), lineprotocolStr);
+          }
       }
     } catch (Throwable t) {
       // any exception wouldn't stop the scheduler