pci_alias was removed from nova::api with
c3e5c7480f03949a824165349642b59a6077ec5d
We need to include ::nova::pci for the nova api service to have
pci/aliases configured in nova api.
Closes-Bug: #1849797
Change-Id: I5258028ff636e8a6287468499dd6974f6c7f6f6f