Improve timeout in input plugins

plugins/inputs/couchdb/couchdb.go

@@ -10,6 +10,7 @@ import (
 	"reflect"
 	"strings"
 	"sync"
+	"time"
 )
 
 // Schema:
@@ -112,9 +113,18 @@ func (c *CouchDB) Gather(accumulator telegraf.Accumulator) error {
 
 }
 
+var tr = &http.Transport{
+	ResponseHeaderTimeout: time.Duration(3 * time.Second),
+}
+
+var client = &http.Client{
+	Transport: tr,
+	Timeout:   time.Duration(4 * time.Second),
+}
+
 func (c *CouchDB) fetchAndInsertData(accumulator telegraf.Accumulator, host string) error {
 
-	response, error := http.Get(host)
+	response, error := client.Get(host)
 	if error != nil {
 		return error
 	}