yum updateinfo list command on client of RHUI 3.0 displays fewer than the actual number of errata.

Issue

yum updateinfo list command on client of RHUI 3.0 displays fewer than the actual number of errata.
If you have 2 repositories that have the same advisory, but different package lists yum updateinfo will only use one of the package lists. This results in yum not thinking an errata is relevant when it is.

Step
1. Add rhui-rhel-x-server-rhui-rpms repo
2. Add rhui-rhel-x-server-rhui-optional-rpms repo
3. Have a package that has parts in both.
4. Run yum updateinfo list on client.