Currently in Neutron we are using hardcoded value "40" in
various places where "ehtertype" column in database is defined.
We should avoid using numeric values directly so this patch
is adding new constant which represents size of the "ethertype" field
in the database.
Change-Id: I2241b6c6fee7df6fdf25e54c7692a79fa1ce25ea
Signed-off-by: Slawek Kaplonski <skaplons@redhat.com>
091bcd7d15