Comment 5 for bug 1585194

Yum package manager doesn't log any not finished successfully transactions and information related to yum fails couldn't be logged to yum.log file.

Since that modifications should be made here(run command with additional logging into file):
https://github.com/openstack/fuel-qa/blob/eaea19b42fcfb84e8936187852f0355ebda88a17/fuelweb_test/helpers/decorators.py#L238
yum update -y -d3
yum update -y -d3 2>>/var/log/yum.error.log