MAC learning has been added in OVN v21.03. Now, if DHCP and port
security are disabled, then the addresses field of a port should not
include its MAC-IP address pairs. This allows the use of OVN MAC
learning capabilities. Existing tests now match this requirement too.
Signed-off-by: Elvira García Ruiz <firstname.lastname@example.org>
(manually cherry picked from commit 24fddc760edcf2004f4608a42ae75f82b3b72b76)