kolla: nova: set num_pcie_ports to 26
We are getting the following errors in nova-compute logs:
ERROR oslo_messaging.notify.messaging libvirt.libvirtError: internal error: No more available PCI slots
Increasing the number of PCI ports seems to be the way to go, according to https://bugs.launchpad.net/nova/+bug/1836065.
Closes #36 (closed)