Add base_conditional_with_lm function (#1528)
Add base_conditional_with_lm function (#1528)

* Added base_conditional_with_lm function, which accepts Lm instead of Kmm

Co-authored-by: Neil Ferguson <822ec91a7ef82248fd36162ca8ac3283eba70848@prowler.io>
Co-authored-by: Vincent Dutordoir <7b62e69fc4afcfe4db040145e12018c86676d04f@gmail.com>
Co-authored-by: st-- <06a4b9ac2126aaa65b8a4e3f309502187b3b5a05@users.noreply.github.com>
GPflow/GPflow