Switch to q35 machine type for test nodes
Switch to q35 machine type for test nodes

q35 is recommended as emulating modern baremetal with better support
for UEFI in general, and Secure Boot in particular.

Old pc type usage is removed, like IDE controller, PS2 mouse, manual
PSI addresses.

Change-Id: Ic33e0f23c5c514a45541534ddd68329d7b4d0480

openstack/ironic,openstack/ironic