Reduce noise in test logs

This commit reduces noise in the test logs by adding a -vv flag, and
silencing server log output, even when verbose testing mode is enabled.

Verbose testing mode (-v) is useful for seeing where sub-tests may be
failing, but it's currently too noisy with the server logs.

The -vv flag can now be used to see all server output. The flag should
be placed _after_ the package you're testing, e.g.,

    go test github.com/influxdata/influxdb/tests -vv

tests/server_helpers.go

@@ -13,7 +13,6 @@ import (
 	"regexp"
 	"strings"
 	"sync"
-	"testing"
 	"time"
 
 	"github.com/influxdata/influxdb/cmd/influxd/run"
@@ -472,13 +471,12 @@ func NewConfig() *run.Config {
 	c.ReportingDisabled = true
 	c.Coordinator.WriteTimeout = toml.Duration(30 * time.Second)
 	c.Meta.Dir = MustTempFile()
-
-	if !testing.Verbose() {
-		c.Meta.LoggingEnabled = false
-	}
+	c.Meta.LoggingEnabled = verboseServerLogs
 
 	c.Data.Dir = MustTempFile()
 	c.Data.WALDir = MustTempFile()
+	c.Data.QueryLogEnabled = verboseServerLogs
+	c.Data.TraceLoggingEnabled = verboseServerLogs
 
 	indexVersion := os.Getenv("INFLUXDB_DATA_INDEX_VERSION")
 	if indexVersion != "" {
@@ -487,7 +485,7 @@ func NewConfig() *run.Config {
 
 	c.HTTPD.Enabled = true
 	c.HTTPD.BindAddress = "127.0.0.1:0"
-	c.HTTPD.LogEnabled = testing.Verbose()
+	c.HTTPD.LogEnabled = verboseServerLogs
 
 	c.Monitor.StoreEnabled = false
 
@@ -724,7 +722,7 @@ func writeTestData(s Server, t *Test) error {
 
 func configureLogging(s Server) {
 	// Set the logger to discard unless verbose is on
-	if !testing.Verbose() {
+	if !verboseServerLogs {
 		s.SetLogOutput(ioutil.Discard)
 	}
 }

tests/server_test.go

@@ -17,10 +17,14 @@ import (
 
 // Global server used by benchmarks
 var benchServer Server
+var verboseServerLogs bool
 
 func TestMain(m *testing.M) {
+	vv := flag.Bool("vv", false, "Turn on very verbose server logging.")
 	flag.Parse()
 
+	verboseServerLogs = *vv
+
 	// Setup
 	c := NewConfig()
 	c.Retention.Enabled = false