Add security groups to ports properties

Security groups IDs list has been added to allow creating port with
security groups attached, and retrieving information about it.

Signed-off-by: Mike Kolesnik <mkolesni@redhat.com>
Fix examples version

Examples version was not bumped for some reason, causing the build to
fail

Signed-off-by: Mike Kolesnik <mkolesni@redhat.com>
Merge pull request #110 from mkolesni/v3.0.x

Fixed for v3.0.x branch