HttpOut should emit same node it received

[rubycut]

For debugging purposes, I should be able to insert httpOut node wherever I want, like so:

var data = stream.from().database('telegram').retentionPolicy('biweekly')
  .measurement('cassandra')
  .where(lambda: "table" == 'metrics3')

data.derivative('local_write_count').NonNegative()
    .window().period(300s).every(60s)
       .mapReduce(influxql.mean('local_write_count'))
.httpOut('local_write_count')
.alert()
        .crit(lambda: "mean" < 3500)
        .message('Cassandra local writes for metics3 table is below 3500 per second.')
        .stateChangesOnly().pagerDuty()

But currently, this is not working:
invalid task: No method or property "alert" on *pipeline.HTTPOutNode

So, now just to debug, I have to rewrite it like this:

var data = stream.from().database('telegram').retentionPolicy('biweekly')
  .measurement('cassandra')
  .where(lambda: "table" == 'metrics3')

var s1 = data.derivative('local_write_count').NonNegative()
    .window().period(300s).every(60s)
       .mapReduce(influxql.mean('local_write_count'))
s1.httpOut('local_write_count')
s1.alert()
        .crit(lambda: "mean" < 3500)
        .message('Cassandra local writes for metics3 table is below 3500 per second.')
        .stateChangesOnly().pagerDuty()

And now it looks ugly.

[nathanielc]

@rubycut This is a simple fix. Also note that a LogNode was just added that does work the way you want and it logs all data it receives to the Kapacitor log. You can try it in last nights build.