Skip test_security_groups_basic_ops for vnic_type=direct of macvtap

Currently there is no security groups support for SR-IOV in openstack.
So test_security_groups_basic_ops should be skipped when
using vnic_type=direct or vnic_type=macvtap.

Closes-Bug: 1437799
Change-Id: If0d40730f057dfb2d73c246b2104b5be2e4c503e
1 file changed