Description of problem:
After upgrade from 5.5.0 to 5.6.0 few packages are left orphaned (i.e. they were installed as part of Satellite 5.5.0, but are not present (or their updates) in 5.6.0 channels). This shows these packages are:

1. not required in 5.6.0 installation
2. we lost track about them so potential security fix do not get into
   5.6.0 installation


Version-Release number of selected component (if applicable):
rhn-upgrade-5.6.0.42-1.el*sat


How reproducible:
always


Steps to Reproduce:
1. Upgrade Satellite 5.5.0 to 5.6.0
2. Make sure you have 5.6.0 channel and not 5.5.0
3. You should not have extra packages (packages not in any subscribed channel)


Actual results:
# yum list extras
[...]
Extra Packages
freemarker.noarch     2.3.16-2.ep5.el6     @/freemarker-2.3.16-2.ep5.el6.noarch 
hivemind.noarch       1.1.1-4.1.ep5.el6    @/hivemind-1.1.1-4.1.ep5.el6.noarch  
jakarta-commons-el.noarch
                      1.0-19.2.1.1.ep5.el6 @redhat-rhn-satellite-5.5-server-x86_64-6
jaxen.noarch          1.1.2-8.ep5.el6      @/jaxen-1.1.2-8.ep5.el6.noarch       
jython.x86_64         2.2.1-4.8.el6        @/jython-2.2.1-4.8.el6.x86_64        
rhn-upgrade.noarch    5.6.0.42-1.el6sat    @redhat-rhn-satellite-5.5-server-x86_64-6
saxpath.noarch        1.0-1.3.el6sat       @/saxpath-1.0-1.3.el6sat.noarch      
servletapi4.noarch    4.0.4-6.2.1.3.ep5.el6
                                           @/servletapi4-4.0.4-6.2.1.3.ep5.el6.noarch
struts-tiles.noarch   1.3.10-1.6.ep5.el6   @redhat-rhn-satellite-5.5-server-x86_64-6
tomcat5-servlet-2.4-api.noarch
                      5.5.33-4_patch_01.ep5.el6
                                           @/tomcat5-servlet-2.4-api-5.5.33-4_patch_01.ep5.el6.noarch
velocity-dvsl.noarch  0.45-3.ep5.el6       @/velocity-dvsl-0.45-3.ep5.el6.noarch
velocity-jboss.noarch 1.4-3.ep5.el6        @/velocity-jboss-1.4-3.ep5.el6.noarch
velocity-tools.noarch 1.4-2.1.ep5.el6      @/velocity-tools-1.4-2.1.ep5.el6.noarch


Expected results:
That listing should be empty.