Refactor logger (#1185)

* refactor: logger

* refactor: logging

* refactor: rename func

* refactor: logging

* refactor: logging format

util/util.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"github.com/future-architect/vuls/config"
+	"github.com/future-architect/vuls/logging"
 )
 
 // GenWorkers generates goroutine
@@ -18,8 +19,7 @@ func GenWorkers(num int) chan<- func() {
 		go func() {
 			defer func() {
 				if p := recover(); p != nil {
-					log := NewCustomLogger(config.ServerInfo{})
-					log.Errorf("run time panic: %v", p)
+					logging.Log.Errorf("run time panic: %+v", p)
 				}
 			}()
 			for f := range tasks {