Dedupe native and EC2 security group APIs.
Dedupe native and EC2 security group APIs.

Reduce the code duplication in the native openstack and EC2 APIs
related to security groups, by factoring commonality into a new
internal SecurityGroupAPI.

Also fixes bug lp 1005931

Change-Id: Ifb92bf5d0f07d5713818a3eee6175ef03e8c0b7c

n0ano/gantt,n0ano/gantt