ML2: Change port status only when it's bound to the host

ML2: Change port status only when it's bound to the host

Currently, nothing prevents the port status to be changed to BUILD
state when get_device_details() is sent by a host that doesn't own
the port.
In some cases the port might stay in BUILD state.
This could happen during a live-migration, or for multi-hosted ports
such as HA ports.
This commit allows the port status modification only if the port
is bound to the host that is asking for it.

Closes-Bug: #1439857
Closes-Bug: #1438040
Closes-Bug: #1416933

Change-Id: I9b3673f453abbafaaa4f78542fcfebe8dc93f2bb