[LIBCLOUD-870] new ex_create_listener_rule method
[LIBCLOUD-870] new ex_create_listener_rule method

Kami/libcloud,Kami/libcloud,mistio/libcloud,andrewsomething/libcloud,andrewsomething/libcloud,apache/libcloud,ByteInternet/libcloud,apache/libcloud,mistio/libcloud,Kami/libcloud,mistio/libcloud,ByteInternet/libcloud,ByteInternet/libcloud,andrewsomething/libcloud,apache/libcloud