added yamltool sort

cmd/yamltool/yamltool.go

@@ -67,6 +67,16 @@ Shows the additions and modifications in <file2> compared to <file1>`,
 	}
 	cmd.AddCommand(parse)
 
+	sort := &cobra.Command{
+		Use:   "sort [file1] ... [fileN]",
+		Short: "Sort the yaml output by sorting based on map key ",
+		Long:  `Sort yaml files, this makes it easier to also use regular diff`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return sortYaml(cmd, args)
+		},
+	}
+	cmd.AddCommand(sort)
+
 	diff.PersistentFlags().IntVarP(&VERBOSITY, "array-output-level",
 		"v", 3, `Array output level: ,
 	0: no output, only exit status,