Issue

yum will wrap lines up to limited characters per line , even if the output is piped .
For example:

# yum list | less
... snip ...
rubygem-abrt.noarch                    0.0.6-2.el7      rhel-7-server-rpms      
rubygem-foreman_scap_client.noarch     0.1.2-1.el7sat   rhel-7-server-satellite-6.2-rpms
rubygem-newt.x86_64                    0.9.6-2.el7sat   rhel-7-server-satellite-6.2-rpms
rubygem-smart_proxy_discovery.noarch   1.0.3-3.el7sat   rhel-7-server-satellite-6.2-rpms
rubygem-smart_proxy_discovery_image.noarch
                                       1.0.5-4.el7sat   rhel-7-server-satellite-6.2-rpms
tfm-rubygem-katello_ostree.noarch      3.0.0.70-1.el7sat
                                                        rhel-7-server-satellite-6.2-rpms
tfm-rubygem-ovirt_provision_plugin.noarch
                                       1.0.2-1.el7sat   rhel-7-server-satellite-6.2-rpms
... snip ...