core: Opteron G2 and newer allowed for Windows 10 guest OS
core: Opteron G2 and newer allowed for Windows 10 guest OS

KVM QE found following combinations as working:
* Host OS: RHEL6.7-z
* Machine type: rhel6.5.0/rhel6.6.0
* Guest OS: Win10 (both 32 and 64 bit)
* CPU: Opteron G2, G3, G4, G5

Thus we decided to enable these CPUs with guest OS Windows 10
and machine type 7.2.

Change-Id: I87f7db295a5a0a12870b8ce1925bc08999d09419
Bug-Url: https://bugzilla.redhat.com/1277214
Signed-off-by: Jakub Niedermertl <67f5da8ed331c4624c6ad915f5d80efd84163b22@redhat.com>

OpenUniversity/ovirt-engine,OpenUniversity/ovirt-engine,OpenUniversity/ovirt-engine,OpenUniversity/ovirt-engine,OpenUniversity/ovirt-engine