Doc: Add Redis password configuration settings

This adds the Redis password authentication to the documentation.

doc/03-Configuration.md

@@ -14,6 +14,7 @@ Option                   | Description
 -------------------------|-----------------------------------------------
 host                     | **Optional.** Redis host. Defaults to `127.0.0.1`.
 port                     | **Optional.** Redis port. Defaults to `6380`.
+password                 | **Optional.** Redis password. Not set by default.
 pool\_size               | **Optional.** Maximum number of socket connections. Defaults to `64`.
 
 ### MySQL Configuration <a id="configuration-general-mysql"></a>

icingadb.ini

@@ -1,6 +1,7 @@
 [redis]
 host="127.0.0.1"
 ;port=6380
+;password="icingadb"
 
 [mysql]
 host="127.0.0.1"

main.go

@@ -5,6 +5,12 @@ package main
 import (
 	"flag"
 	"fmt"
+	"os"
+	"os/signal"
+	"regexp"
+	"sync"
+	"syscall"
+
 	"github.com/Icinga/icingadb/config"
 	"github.com/Icinga/icingadb/configobject"
 	"github.com/Icinga/icingadb/configobject/configsync"
@@ -64,11 +70,6 @@ import (
 	"github.com/Icinga/icingadb/prometheus"
 	"github.com/Icinga/icingadb/supervisor"
 	log "github.com/sirupsen/logrus"
-	"os"
-	"os/signal"
-	"regexp"
-	"sync"
-	"syscall"
 )
 
 var gitVersion = regexp.MustCompile(`\A(.+)-\d+-g([A-Fa-f0-9]+)\z`)
@@ -104,7 +105,7 @@ func main() {
 	mysqlInfo := config.GetMysqlInfo()
 	metricsInfo := config.GetMetricsInfo()
 
-	redisConn := connection.NewRDBWrapper(redisInfo.Host+":"+redisInfo.Port, redisInfo.Password,redisInfo.PoolSize)
+	redisConn := connection.NewRDBWrapper(redisInfo.Host+":"+redisInfo.Port, redisInfo.Password, redisInfo.PoolSize)
 
 	mysqlConn, err := connection.NewDBWrapper(
 		mysqlInfo.User+":"+mysqlInfo.Password+"@tcp("+mysqlInfo.Host+":"+mysqlInfo.Port+")/"+mysqlInfo.Database,