Do not set project_id for floating ip ports
Do not set project_id for floating ip ports

Floating IP ports should not have a project_id assigned to them as they
are not managed by the owner of a project, but by OpenStack itself. With
a project_id assigned they also count towards the port quota of said
project, which they should not. Therefore, we do not set a project_id
anymore on Floating IP creation for the Floating IP port. This is in
line with the behaviour we currently have for gateway interfaces of
routers.

Change-Id: I053d48166141e5cdbd39a1235a43b06d64478bc1
Closes-Bug: #1949767

openstack/neutron,openstack/neutron,mahak/neutron,openstack/neutron,mahak/neutron,mahak/neutron