Fixed Timezone format to be milisecond ONLY.

https://groups.google.com/forum/#!topic/logstash-users/wIzdv15Iefs
https://github.com/logstash/logstash/blob/d5ba31223835e214acd63c268d744a1aa6331e05/lib/logstash/time_addon.rb#L20
Fix for whitespace.
Merge pull request #13 from anthroprose/logstash132-tzfix

Logstash132 tzfix