set controller name to request, this is usually used by custom router to set route result controller name.
Parâmetros
controller
string, controller name, this should be in camel style, like "Index" or "Foo_Bar"
format_name
this is introduced in Yaf 3.2.0, by default Yaf will format the name into camel mode,
if this is set to false , Yaf will set the original name to request.
