Description of problem:
I cannot install mock from epel7

Version-Release number of selected component (if applicable):
mock-1.3.3-1.el7.noarch

How reproducible:
Deterministic

Steps to Reproduce:
//tested on CentOS 7
1. yum install -y --debuglevel=1 epel-release
2. yum install -y --debuglevel=1 mock

Actual results:
Error: Package: mock-1.3.3-1.el7.noarch (epel)
           Requires: python2-distro
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

Expected results:
Package is installed without any problem

Additional info:
Neither python2-distro nor python-distro is available in EPEL7
sh# yum install -y --debuglevel=1 python2-distro python-distro
Error: Nothing to do