lua5.1: fix packaging QA warnings

* Fixes:
  lua5.1-5.1.4: lua5.1: Files/directories were installed but not shipped
    /usr/share/lua
    /usr/share/lua/5.1
    /usr/lib/lua
    /usr/lib/lua/5.1

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>