KINGSTON, R.I. — J.T. Miller and Artemi Panarin are “good to go” against the Penguins on Opening Night Tuesday at Madison Square Garden, head coach Mike Sullivan confirmed Monday after practice at the University of Rhode Island.  Both forwards were full participants in the Rangers practice at Boss Ice Arena.  Access the Rangers beat like never before Join Post Sports+ for exciting subscriber-only features, including real-time texting with Mollie Walker about the inside buzz on the Rangers. tRY