Use IPv[46]_BITS instead of IPV[46]_MAX_PREFIXLEN

Replace references to IPV[46]_MAX_PREFIXLEN with IPv[46]_BITS from
neutron-lib. Replace several integer literals used to represent IP
address sizes with these constants too.

Remove IPV4_MAX_PREFIXLEN and IPV6_MAX_PREFIXLEN from neutron constants
as they are no longer referenced:
    http://codesearch.openstack.org/?q=IPV[46]_MAX_PREFIXLEN

Change-Id: I03e1405e71f08db9ac6e759258625139c28ecc89
1 file changed
tree: c1917e5ffff427f7de26d5df91385b60da13f315
  1. neutron/