Optimize add security group rules for exposed ports

[Dongcan Ye]

If user wants to expose ranges of ports for a container, like ports from 1000 to 5000. Using docker client command:
$ docker run --net=my_kuryr_net --expose=1000-5000/udp -it ubuntu:14.04

In currently implementation, we should call Neutron client 4000 times to create Neutron security group rules.

Maybe there is a method to optimize this, and passing port-range-min and port-range-max values to Neutron client.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/378485

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/378485
Committed: https://git.openstack.org/cgit/openstack/kuryr-libnetwork/commit/?id=75f15770bc22ae6b55bb1d35437b5c9f8b964b67
Submitter: Jenkins
Branch: master

commit 75f15770bc22ae6b55bb1d35437b5c9f8b964b67
Author: Dongcan Ye <email address hidden>
Date: Wed Sep 28 17:41:44 2016 +0800

    Optimize add security group rules for exposed ports

    If user wants to expose ranges of ports for a container,
    like ports from 1000 to 1100. Using docker client command:
    $ docker run --net=my_kuryr_net --expose=1000-1100/udp -it ubuntu:14.04

    In currently implementation, we should call Neutron client 100 times
    to create Neutron security group rules.

    This patch obtains min_port and max_port from libnetwork request,
    then pass to Neutron client port-range-min and port-range-max in
    security-group-rule-create.

    Change-Id: I3a2baa71f94834bdf3679bb05c40f9f2ae06eca8
    Closes-Bug: #1627922