Trace logging seems to be on permanently

While running v1.2.2 Kapacitor seems to be dumping a bunch of traces to standard out.

Here are some of the example traces:

```
goroutine 2323 [chan receive, 10 minutes]:
github.com/influxdata/kapacitor.(*group).run(0xc4207d4050, 0x0, 0x0)
/home/builder/go/src/github.com/influxdata/kapacitor/join.go:324 +0xb2
github.com/influxdata/kapacitor.(*JoinNode).getGroup.func1(0xc4207d4050, 0xc4204e6160, 0xc4204e3020)
/home/builder/go/src/github.com/influxdata/kapacitor/join.go:278 +0x35
created by github.com/influxdata/kapacitor.(*JoinNode).getGroup
/home/builder/go/src/github.com/influxdata/kapacitor/join.go:286 +0x2c5

net.runtime_pollWait(0x7f770b3205b0, 0x72, 0xa)
/usr/local/go/src/runtime/netpoll.go:160 +0x59
net.(*pollDesc).wait(0xc479db5db0, 0x72, 0xc455e1e7b0, 0xc420016140)
net.(*pollDesc).waitRead(0xc479db5db0, 0x12116c0, 0xc420016140)
net.(*netFD).Read(0xc479db5d50, 0xc467381000, 0x1000, 0x1000, 0x0, 0x12116c0, 0xc420016140)
net.(*conn).Read(0xc42036c5f8, 0xc467381000, 0x1000, 0x1000, 0x0, 0x0, 0x0)
```

Here is a link to the running configuration: https://gist.github.com/pmyjavec/57910435a55ef4ba11e7982b40e86c66