Description of problem:
I'm trying to update the overcloud image (using virt-customize) and I get the following error:

--> Running transaction check
---> Package oci-umount.x86_64 2:1.12.6-48.git0fdc778.el7 will be installed
---> Package python-networking-l2gw.noarch 1:10.1.0-0.20170718142454.25133e6.el7ost will be updated
--> Processing Dependency: python-networking-l2gw = 1:10.1.0-0.20170718142454.25133e6.el7ost for package: 1:openstack-neutron-l2gw-agent-10.1.0-0.20170718142454.25133e6.el7ost.noarch
---> Package subscription-manager-plugin-container.x86_64 0:1.19.21-1.el7 will be installed
--> Finished Dependency Resolution
Error: Package: 1:openstack-neutron-l2gw-agent-10.1.0-0.20170718142454.25133e6.el7ost.noarch (@rhos-12.0-signed)
           Requires: python-networking-l2gw = 1:10.1.0-0.20170718142454.25133e6.el7ost
           Removing: 1:python-networking-l2gw-10.1.0-0.20170718142454.25133e6.el7ost.noarch (@rhos-12.0-signed)
               python-networking-l2gw = 1:10.1.0-0.20170718142454.25133e6.el7ost
           Updated By: 1:python-networking-l2gw-10.1.0-0.20170721170224.af0f54a.el7ost.noarch (rhelosp-12.0-puddle)
               python-networking-l2gw = 1:10.1.0-0.20170721170224.af0f54a.el7ost
 You could try using --skip-broken to work around the problem

Version-Release number of selected component (if applicable):
python-networking-l2gw = 1:10.1.0-0.20170718142454.25133e6

How reproducible:


Steps to Reproduce:
1. Update the overcloud image e.g. using 
   virt-customize -a overcloud-full.qcow2 --update --selinux-relabel 
2. Verify that you get the error above
3.

Actual results:


Expected results:


Additional info: