Disco: apache2-bin has mod_lua linked with lua5.2
Cosmic: apache2-bin has mod_lua linked with lua5.2
Bionic: apache2-bin has mod_lua linked with lua5.2
xenial: apache2-bin has mod_lua linked with lua5.1
trusty: apache2-bin has NO mod_lua (see #1323930)
Disco: apache2-bin has mod_lua linked with lua5.2
Cosmic: apache2-bin has mod_lua linked with lua5.2
Bionic: apache2-bin has mod_lua linked with lua5.2
xenial: apache2-bin has mod_lua linked with lua5.1
trusty: apache2-bin has NO mod_lua (see #1323930)
I'm marking the apache2 task as resolved.