autotest/virt-test — pull request #1007 by jferlan (2013-11-05 13:31:16+00:00)
Title: virsh_nodeinfo: Alter algorithm for cpu frequency

Obtaining the /proc/cpuinfo at two different points in time
can result in slightly different values for 'CPU frequency'.
So rather than just straight out fail because they don't match
exactly, allow for a 20% variation of either value before
declaring failure