add tzinfo config, useful when start druid without utc timezone

[wbchn]

I startup druid cluster with America/Los_Angeles timezone(both cluster instances and druid commands).

Then I found the query of table view(Now: 02:05:56 PDT / 10:05:56 UTC), the intervals of query using none timezone information:

// Two phase query
// Phase 1
{
  "dimensions": [], 
  "aggregations": [
    {
      "type": "count", 
      "name": "count"
    }
  ], 
  "intervals": "2015-09-05T02:05:56/2015-09-06T02:05:56", 
  "dataSource": "..."
...

It queried data before 2015-09-06T02:05:56 UTC, but can not query data between 2015-09-06T02:05:57 UTC ~ 2015-09-06T10:05:56 UTC. May be it would be "intervals": "2015-09-05T02:05:56-07:00/2015-09-06T02:05:56-07:00".

so I add this tzinfo configure, setting DRUID_TZ = tz.tzlocal() when start druid without UTC timezone(of course, it also work fine if both cluster instances and druid using UTC timezone).

[mistercrunch]

Awesome thanks!

[wbchn]

Sorry, I've forgotten to add timezone to granularity of json, and I will test and pull again.

Thanks for your open project.