Changing AddValues to AddFields and temp disabling adding w time

Currently adding with time is broken, because InfluxDB does not support
using precision for timestamp truncation both with and without
timestamps. This will be re-enabled once we fix InfluxDB to use the
precision argument for truncation in all cases, and a "unit" argument
in the line-protocol for adding points with non-nanosecond stamps

Fixes #175

plugins/kafka_consumer/kafka_consumer.go

@@ -93,7 +93,7 @@ func emitMetrics(k *Kafka, acc plugins.Accumulator, metricConsumer <-chan []byte
 			}
 
 			for _, point := range points {
-				acc.AddValuesWithTime(point.Name(), point.Fields(), point.Tags(), point.Time())
+				acc.AddFieldsWithTime(point.Name(), point.Fields(), point.Tags(), point.Time())
 			}
 		case <-timeout:
 			return nil

plugins/mongodb/mongodb_data.go

@@ -89,7 +89,7 @@ func (d *MongodbData) addStat(acc plugins.Accumulator, statLine reflect.Value, s
 }
 
 func (d *MongodbData) add(acc plugins.Accumulator, key string, val interface{}) {
-	acc.AddValuesWithTime(
+	acc.AddFieldsWithTime(
 		key,
 		map[string]interface{}{
 			"value": val,

plugins/registry.go

@@ -10,8 +10,8 @@ type Accumulator interface {
 
 	// Create a point with a set of values, decorating it with tags
 	// NOTE: tags and values are expected to be owned by the caller, don't mutate
-	// them after passing to AddValuesWithTime.
-	AddValuesWithTime(
+	// them after passing to AddFieldsWithTime.
+	AddFieldsWithTime(
 		measurement string,
 		values map[string]interface{},
 		tags map[string]string,