add DCCP, SCTP and UDP-Lite to validated protos for port ranges
add DCCP, SCTP and UDP-Lite to validated protos for port ranges

This patch updates the description for security group rules port range
to clarify that it now validates ranges for DCCP, SCTP or UDP-Lite.
See the related bug for more details.

The patch also removes 2 related port range parameters that aren't used
in our api-ref today.

Change-Id: I0ae2b1aee19d76e1ef61e424dd2f9224a53b91d9
Closes-Bug: #1716081

openstack/neutron-lib,openstack/neutron-lib,openstack/neutron-lib,openstack/neutron-lib