This commit allows to add pci information for direct
neutron ports attached to PODs into nodes annotations.
It happens on binding stage when pci information can
be requested.
Also this commit allows to delete annotations for such
ports when apropriate POD is deleted and VFs are returned
into host's network namespace.
For future commits: it is necessary to update neutron
ports with pci info when POD is in Running state.
Change-Id: I5ea8da6bb3143fd689e701f5e503488d4a6c9b33
Closes-Bug: 1818606
Signed-off-by: Danil Golov <d.golov@samsung.com>