chore: enable interfacebloat linter (influxdata#12174)

.golangci.yml

@@ -14,6 +14,7 @@ linters:
     - gosimple
     - govet
     - ineffassign
+    - interfacebloat
     - nakedret
     - nilerr
     - predeclared

metric.go

@@ -32,6 +32,7 @@ type Field struct {
 // Metric is the type of data that is processed by Telegraf.  Input plugins,
 // and to a lesser degree, Processor and Aggregator plugins create new Metrics
 // and Output plugins write them.
+// nolint:interfacebloat // conditionally allow to contain more methods
 type Metric interface {
 	// Name is the primary identifier for the Metric and corresponds to the
 	// measurement in the InfluxDB data model.

plugins/inputs/procstat/process.go

@@ -8,6 +8,7 @@ import (
 	"github.com/shirou/gopsutil/v3/process"
 )
 
+// nolint:interfacebloat // conditionally allow to contain more methods
 type Process interface {
 	PID() PID
 	Tags() map[string]string