Description of problem:
Upgrades documentation should be more clear for Satellites post-Twilight errata


Version-Release number of selected component (if applicable):
rhn-upgrade-5.8.0.18-1.el6sat


How reproducible:
always


Steps to Reproduce:
1. Have 5.7.0 with Twilight errata applied
2. Read upgrade documentation


Actual results:
1. For connected Satellites, disable the Red Hat Satellite in the RHN Classic environment
   (applicable before RHN Classic shutdown).

This step is to free up an operating system entitlement for your Red Hat Satellite.

To achieve this, do the following:

- https://rhn.redhat.com/rhn/systems/SatelliteList.do
  - Find the old Red Hat Satellite's system profile and click on it.
- Click the "Satellite" link.
- "Deactivate Satellite License"
- "Confirm Deactivation"
- From there, continue and disable the Base Channel:
  - Click on "Details"
  - Click on "Alter Channel Subscriptions"
  - To the left of the "Modify Base Channel" button, change the Base Software
    Channel to "(None - disable this service)".
  - Click "Modify Base Channel"


2. Attach subscription(s) for connected Red Hat Satellite installations.

Register your server to RHSM and attach subscription(s) providing
Red Hat Enterprise Linux and Red Hat Satellite to the server.

If this step is skipped, registration and attaching subscriptions will be done
in the next step automatically.


Expected results:
Step 1 should not mention "RHN Classic shutdown", but should consider satellites which applied Twilight errata before shutdown.

Step 2 should contain something like "...if you are already registered via RHSM...". Also IMO should make it clear this applies to connected satellites only.