Merge setting.InitXXX into one function with options (#24389)

This PR will merge 3 Init functions on setting packages as 1 and
introduce an options struct.

cmd/dump.go

@@ -185,8 +185,7 @@ func runDump(ctx *cli.Context) error {
 		}
 		fileName += "." + outType
 	}
-	setting.InitProviderFromExistingFile()
-	setting.LoadCommonSettings()
+	setting.Init(&setting.Options{})
 
 	// make sure we are logging to the console no matter what the configuration tells us do to
 	// FIXME: don't use CfgProvider directly