gopsutil, fix /proc/pid/io naming issue

closes influxdata#1584

Author: sparrc

CHANGELOG.md

@@ -14,6 +14,7 @@
 - [#1430](https://github.com/influxdata/telegraf/issues/1430): Fix prometheus character sanitizing. Sanitize more win_perf_counters characters.
 - [#1534](https://github.com/influxdata/telegraf/pull/1534): Add diskio io_time to FreeBSD & report timing metrics as ms (as linux does).
 - [#1379](https://github.com/influxdata/telegraf/issues/1379): Fix covering Amazon Linux for post remove flow.
+- [#1584](https://github.com/influxdata/telegraf/issues/1584): procstat missing fields: read/write bytes & count
 
 ## v1.0 beta 3 [2016-07-18]
 

Godeps

@@ -44,7 +44,7 @@ github.com/prometheus/client_model fa8ad6fec33561be4280a8f0514318c79d7f6cb6
 github.com/prometheus/common e8eabff8812b05acf522b45fdcd725a785188e37
 github.com/prometheus/procfs 406e5b7bfd8201a36e2bb5f7bdae0b03380c2ce8
 github.com/samuel/go-zookeeper 218e9c81c0dd8b3b18172b2bbfad92cc7d6db55f
-github.com/shirou/gopsutil ee66bc560c366dd33b9a4046ba0b644caba46bed
+github.com/shirou/gopsutil 4d0c402af66c78735c5ccf820dc2ca7de5e4ff08
 github.com/soniah/gosnmp b1b4f885b12c5dcbd021c5cee1c904110de6db7d
 github.com/sparrc/aerospike-client-go d4bb42d2c2d39dae68e054116f4538af189e05d5
 github.com/streadway/amqp b4f3ceab0337f013208d31348b578d83c0064744

plugins/inputs/procstat/spec_processor.go

@@ -71,7 +71,7 @@ func (p *SpecProcessor) pushMetrics() {
 		fields[prefix+"read_count"] = io.ReadCount
 		fields[prefix+"write_count"] = io.WriteCount
 		fields[prefix+"read_bytes"] = io.ReadBytes
-		fields[prefix+"write_bytes"] = io.WriteCount
+		fields[prefix+"write_bytes"] = io.WriteBytes
 	}
 
 	cpu_time, err := p.proc.Times()