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>
Merge pull request #109 from mkolesni/master

Add security groups to ports properties
resteasy: catch IllegalStateException on InputStream close

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
Merge pull request #111 from simon3z/master

resteasy: catch IllegalStateException on InputStream close