Created attachment 1092663 [details]
rhn_taskomatic_daemon.log

Description of problem:

The spacewalk-repo-sync fails.This problem appeared after latest updates, I think is related with epel. I've attached also the rhn_taskomatic log

How to reproduce:
1. It can be reproduced on SW 2.4 or 2.3 on Centos 7 (7.1.1503) with latest updates by running:

/usr/bin/spacewalk-repo-sync --type=yum --channel=centos7_base_ch

OR 

2 . On fresh SW install of 2.3 or 2.4 on centos 7.1 and same result.
    On centos 6 Sw 2.4  works fine.


Results:
/usr/bin/spacewalk-repo-sync --type=yum --channel=centos7_base_ch
======================================
| Channel: centos7_base_ch
======================================
Traceback (most recent call last):
  File "/usr/bin/spacewalk-repo-sync", line 218, in <module>
    sys.exit(abs(main() or 0))
  File "/usr/bin/spacewalk-repo-sync", line 210, in main
    latest=options.latest)
  File "/usr/lib/python2.7/site-packages/spacewalk/satellite_tools/reposync.py", line 174, in __init__
    self.repo_plugin = self.load_plugin(repo_type)
  File "/usr/lib/python2.7/site-packages/spacewalk/satellite_tools/reposync.py", line 241, in load_plugin
    mod = __import__('spacewalk.satellite_tools.repo_plugins', globals(), locals(), [name])
  File "/usr/lib/python2.7/site-packages/spacewalk/satellite_tools/repo_plugins/__init__.py", line 18, in <module>
    from spacewalk.server import rhnPackageUpload
  File "/usr/lib/python2.7/site-packages/spacewalk/server/rhnPackageUpload.py", line 20, in <module>
    from spacewalk.common import rhn_mpm, rhn_deb, rhn_pkg
  File "/usr/lib/python2.7/site-packages/spacewalk/common/rhn_deb.py", line 23, in <module>
    from debian import debfile
  File "/usr/lib/python2.7/site-packages/debian/debfile.py", line 27, in <module>
    from debian.deb822 import Deb822
  File "/usr/lib/python2.7/site-packages/debian/deb822.py", line 1481, in <module>
    @six.add_metaclass(_ClassInitMeta)
AttributeError: 'module' object has no attribute 'add_metaclass