Add the following network options to the "os security group rule"
command:
(1) --ingress and --egress
(2) --ethertype
These options enable egress and IPv6 security group rules for
Network v2.
Change-Id: Ie30b5e95f94e0c087b0ce81e518de72d2dda25ad
Partial-Bug: #1519512
Implements: blueprint neutron-client