Skip hanging test on darwin

plugins/inputs/http_listener/http_listener_test.go

@@ -8,6 +8,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"net/url"
+	"runtime"
 	"strconv"
 	"sync"
 	"testing"
@@ -425,6 +426,9 @@ func TestWriteHTTPGzippedData(t *testing.T) {
 
 // writes 25,000 metrics to the listener with 10 different writers
 func TestWriteHTTPHighTraffic(t *testing.T) {
+	if runtime.GOOS != "darwin" {
+		t.Skip("Skipping due to hang on darwin")
+	}
 	listener := newTestHTTPListener()
 
 	acc := &testutil.Accumulator{}