Description of problem:

I've seen several systems have their subscription become unattached and then error  when attempting to update packages via 'yum update' that were previously installed as part of the rhel-6-server-supplementary-rpms or rhel-6-server-optional-rpms.

The subscriptions became unattached when the virt-who server was unavailable for a period a few times - and then automatically re-attached their licenses (auto-attach option is enabled)

I can re-create this behavior by removing its subscriptions manually - then re-attaching them.  Listing the installed repositories shows it as disabled.  It needs to then be re-enabled using either:
subscription-manager repos --enable=rhel-6-server-supplementary-rpms
or 
yum-config-manager --enable rhel-6-server-supplementary-rpms

Version-Release number of selected component (if applicable):


How reproducible:

Always

Steps to Reproduce:
1. Add rhel-6-server-supplementary-rpms (or another Red Hat Repo requiring a subscription)
2. Install an older or obsolete version of a package from the repo
3. Let the system's subscription lapse or manually unattached (subscription-manager remove --all)
4. Let the system automatically re-attach (auto-attach) or manually re-attach (subscription-manager attach --auto)
5. Try to run a 'yum update' to see it error and/or do a 'yum repolist all' to see it as disabled.


Actual results:


Expected results:


Additional info: