refactor(config): localize config used like a global variable (#1179)

* refactor(report): LocalFileWriter

* refactor -format-json

* refacotr: -format-one-email

* refactor: -format-csv

* refactor: -gzip

* refactor: -format-full-text

* refactor: -format-one-line-text

* refactor: -format-list

* refacotr: remove -to-* from config

* refactor: IgnoreGitHubDismissed

* refactor: GitHub

* refactor: IgnoreUnsocred

* refactor: diff

* refacotr: lang

* refacotr: cacheDBPath

* refactor: Remove config references

* refactor: ScanResults

* refacotr: constant pkg

* chore: comment

* refactor: scanner

* refactor: scanner

* refactor: serverapi.go

* refactor: serverapi

* refactor: change pkg structure

* refactor: serverapi.go

* chore: remove emtpy file

* fix(scan): remove -ssh-native-insecure option

* fix(scan): remove the deprecated option `keypassword`

config/config_test.go

@@ -2,6 +2,8 @@ package config
 
 import (
 	"testing"
+
+	. "github.com/future-architect/vuls/constant"
 )
 
 func TestSyslogConfValidate(t *testing.T) {
@@ -55,7 +57,7 @@ func TestSyslogConfValidate(t *testing.T) {
 	}
 
 	for i, tt := range tests {
-		Conf.ToSyslog = true
+		tt.conf.Enabled = true
 		errs := tt.conf.Validate()
 		if len(errs) != tt.expectedErrLength {
 			t.Errorf("test: %d, expected %d, actual %d", i, tt.expectedErrLength, len(errs))