[GITEA] add GetFile to config provider

(cherry picked from commit 88d1b53eea)
(cherry picked from commit f63f71afad)
(cherry picked from commit 1f774145fc)
(cherry picked from commit 53e637693b)
(cherry picked from commit 4974cbf10a)
(cherry picked from commit 554bca7fae)

modules/setting/config_provider.go

@@ -53,6 +53,7 @@ type ConfigProvider interface {
 	Save() error
 	SaveTo(filename string) error
 
+	GetFile() string
 	DisableSaving()
 	PrepareSaving() (ConfigProvider, error)
 	IsLoadedFromEmpty() bool
@@ -258,6 +259,10 @@ func (p *iniConfigProvider) GetSection(name string) (ConfigSection, error) {
 
 var errDisableSaving = errors.New("this config can't be saved, developers should prepare a new config to save")
 
+func (p *iniConfigProvider) GetFile() string {
+	return p.file
+}
+
 // Save saves the content into file
 func (p *iniConfigProvider) Save() error {
 	if p.disableSaving {