skip some port_forwarding test

neutron adds port_forwarding id when list floatingip[1], because there
is currently no method to quickly determine the extension that is
actually loaded. updating temptest and neutron patch are interdependent.
first skip some port_forwarding test, after neutron patch merged, add
`floating-ip-port-forwarding-detail` and revalidate the test.

[1] https://review.opendev.org/c/openstack/neutron/+/840565

Change-Id: I8a69d8786350f80d563f98607177c015134be523
1 file changed