Initial Baby Step to refactoring settings from global vars to instance (#11777)

* wip: start on refactoring settings

* settings: progress on settings refactor

* refactor: progress on settings refactoring

* fix: fixed failing test

* settings: moved smtp settings from global to instance

pkg/cmd/grafana-cli/commands/commands.go

@@ -15,7 +15,8 @@ func runDbCommand(command func(commandLine CommandLine) error) func(context *cli
 	return func(context *cli.Context) {
 		cmd := &contextCommandLine{context}
 
-		setting.NewConfigContext(&setting.CommandLineArgs{
+		cfg := setting.NewCfg()
+		cfg.Load(&setting.CommandLineArgs{
 			Config:   cmd.String("config"),
 			HomePath: cmd.String("homepath"),
 			Args:     flag.Args(),