logstash/logstash — pull request #705 by jordansissel (2013-10-08 13:44:31+00:00)
Title: When doing number validation, leave a  Numeric as-is and only try to do

float/int conversion on strings. (Fixes LOGSTASH-1441)

Confirmed working with this config:

```
output { statsd { sample_rate => 0.5 increment => "foo" } }
```