Description of problem:
A verbose module listing displays a column called 'Info'. The respective module attribute is named 'Summary' and therefore it makes sense to call it the same way in the module list output.

Version-Release number of selected component (if applicable):
dnf-2.7.5-12.fc28.noarch

How reproducible:
always

Steps to Reproduce:
1. fresh container based on docker.io/fedora:28 (or other current F28 VM/container) with latest F28 updates and fedora-repos-modular enabled
2. dnf module list -v

Actual results:
Module listing displays a column called 'Info'.

Expected results:
Module listing displays a column called 'Summary'. This is the attribute name used in the module metadata, and the also the attribute name displayed when running 'dnf module info _module_:_stream_'.

Additional info: