Use timeout smaller than 10 seconds

closes #959

plugins/inputs/mongodb/mongodb.go

@@ -103,7 +103,7 @@ func (m *MongoDB) gatherServer(server *Server, acc telegraf.Accumulator) error {
 				dialAddrs[0], err.Error())
 		}
 		dialInfo.Direct = true
-		dialInfo.Timeout = time.Duration(10) * time.Second
+		dialInfo.Timeout = 5 * time.Second
 
 		if m.Ssl.Enabled {
 			tlsConfig := &tls.Config{}

plugins/inputs/mongodb/mongodb_test.go

@@ -43,7 +43,7 @@ func testSetup(m *testing.M) {
 		log.Fatalf("Unable to parse URL (%s), %s\n", dialAddrs[0], err.Error())
 	}
 	dialInfo.Direct = true
-	dialInfo.Timeout = time.Duration(10) * time.Second
+	dialInfo.Timeout = 5 * time.Second
 	sess, err := mgo.DialWithInfo(dialInfo)
 	if err != nil {
 		log.Fatalf("Unable to connect to MongoDB, %s\n", err.Error())

plugins/inputs/prometheus/prometheus.go

@@ -80,10 +80,10 @@ func (p *Prometheus) gatherURL(url string, acc telegraf.Accumulator) error {
 
 	var rt http.RoundTripper = &http.Transport{
 		Dial: (&net.Dialer{
-			Timeout:   10 * time.Second,
+			Timeout:   5 * time.Second,
 			KeepAlive: 30 * time.Second,
 		}).Dial,
-		TLSHandshakeTimeout: 10 * time.Second,
+		TLSHandshakeTimeout: 5 * time.Second,
 		TLSClientConfig: &tls.Config{
 			InsecureSkipVerify: p.InsecureSkipVerify,
 		},