+++ This bug was initially created as a clone of Bug #1171278 +++

Description of problem:

Errata as released by Red Hat rcm releases the same errata for multiple repositories (RHEL 5, RHEL 6, etc..).

Within the repository, only the packages actually contained within the repository actually are listed for the errata.  For example:

https://rhn.redhat.com/errata/RHSA-2014-1652.html

contains packages for both el6 and el7, but the updateinfo for el6 only contains:

<?xml version="1.0" encoding="UTF-8"?>
<pkglist>
   <collection short="rhel-x86_64-server-6">
      <name>Red Hat Enterprise Linux Server (v. 6 for 64-bit x86_64)</name>
      <package name="openssl" version="1.0.1e" release="30.el6_6.2" epoch="0" arch="i686" src="openssl-1.0.1e-30.el6_6.2.src.rpm">
         <filename>openssl-1.0.1e-30.el6_6.2.i686.rpm</filename>
         <sum type="sha256">e85e84237f069e64333603fbed965b4d0b034c2933c9160eaf4b605d8c3ccd16</sum>
      </package>
      <package name="openssl-devel" version="1.0.1e" release="30.el6_6.2" epoch="0" arch="x86_64" src="openssl-1.0.1e-30.el6_6.2.src.rpm">
         <filename>openssl-devel-1.0.1e-30.el6_6.2.x86_64.rpm</filename>
         <sum type="sha256">dcbbbd1b21733e3e3168897120bfc1674c051c4efe7a621d5c5dece211169207</sum>
      </package>
      <package name="openssl-devel" version="1.0.1e" release="30.el6_6.2" epoch="0" arch="i686" src="openssl-1.0.1e-30.el6_6.2.src.rpm">
         <filename>openssl-devel-1.0.1e-30.el6_6.2.i686.rpm</filename>
         <sum type="sha256">32f1611b3c8934fc10ac3ed87e57847bdaa4f4aebb21ed25d3b6c005722d1bda</sum>
      </package>
      <package name="openssl" version="1.0.1e" release="30.el6_6.2" epoch="0" arch="x86_64" src="openssl-1.0.1e-30.el6_6.2.src.rpm">
         <filename>openssl-1.0.1e-30.el6_6.2.x86_64.rpm</filename>
         <sum type="sha256">904b7d8367de9f94c1878720e634a226ea3c1f67067af6a939dd05f68e7ab1ac</sum>
      </package>
   </collection>
</pkglist>


The result is that after pulp syncs an errata once, it will never update the existing errata, but will associate the existing errata with the new repositories.


How reproducible:
Always

Steps to Reproduce:
1.  Sync RHEL 6 Server and wait for it to finish then,
2.  Sync RHEL 7 Server
3.  Check the RHSA-2014-1652 errata in pulp and list its packages

Actual results:
Will only contain the rhel 6 packages, will not contain the rhel 7 packages


Expected results:
The RHSA-2014-1652 errata on rhel 7 contains rhel 7 packages, for rhel 6 contains the rhel 6 packages

Additional info: