qtest/x86/numa-test: do not use the obsolete 'pentium' cpu

qtest/x86/numa-test: do not use the obsolete 'pentium' cpu

'pentium' cpu is old and obsolete and should be avoided for running tests if
its not strictly needed. Use 'max' cpu instead for generic non-cpu specific
numa test.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Mario Casquero <mcasquer@redhat.com>
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Message-ID: <20240610155303.7933-2-anisinha@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>