Added an option to configure method argument resolvers registered by RepositoryRestMvcConfiguration

I'm building a LightAdmin product on top of Spring Data REST and it would be really cool to make it a little bit more extendable in some aspects.
This pull request contains a small change to RepositoryRestMvcConfiguration and makes it possible to configure HandlerMethodArgumentResolver's registered.

PS: Currently, I need to do it like this: https://gist.github.com/max-dev/2b0ec3363e731801475f which is really awful.

Thanks)