history: modified 03_05_0020 upgrade file

In relation to the retroactive update
of user and system cpu usage percent,
according to the number of cpus of the vm.
I removed the bug url comment from the
upgrade file so it will be identical to the
upgrade file for 3.4.

Change-Id: If8230763deb0e69a39425b410bbdbaef191f782e
Bug-Url: https://bugzilla.redhat.com/1078897
Signed-off-by: Shirly Radco <sradco@redhat.com>