Evaluate Pulp2's dependence and usage of yum related packages
To stay forward compatible, we need to ensure that we can use the newer versions of the following packages:
yum (replaced by dnf)
yum-utils (replaced by dnf-utils)
yum-metadata-parser (replaced by dnf)
python-urlgrabber (replaced by pycurl)
createrepo (replaced by createrepo_c)
Which of these packages do we depend on, and of those, how do we use them? If the answer is sizeable, consider adding it to a new wiki page.