def baselineCPU(self, cpu, flag):
        return """<cpu mode='custom' match='exact'>
                    <model>Penryn</model>
                    <vendor>Intel</vendor>
                    <feature name='xtpr'/>
                    <feature name='tm2'/>
                    <feature name='est'/>
                    <feature name='vmx'/>
                    <feature name='ds_cpl'/>
                    <feature name='monitor'/>
                    <feature name='pbe'/>
                    <feature name='tm'/>
                    <feature name='ht'/>
                    <feature name='ss'/>
                    <feature name='acpi'/>
                    <feature name='ds'/>
                    <feature name='vme'/>
                    <feature policy='require' name='aes'/>
                  </cpu>"""
Add new libvirt API.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/tests/unit/virt/libvirt/fakelibvirt.py/Connection.baselineCPU