Add opendaylight sfc support for compass installer

Add opendaylight sfc support for compass installer

JIRA: COMPASS-483

As odl sfc has been supported by other installers,
we compass project has also support odl boron and tacker now.
So we are going to support odl sfc+tacker in Danube release.

This patch includes:

1. Add ovs-common and ovs-dkms
2. Install networking-sfc for neutron and odl
3. Configure odl sfc in neutron ml2
4. Add sfc related features in odl
5. Add sfc related repo making scripts
6. Add odl_sfc switch both in compass4nfv and compass-core

Change-Id: If37a9e190c3095d771ffab61777a927b6d94ea9e
Signed-off-by: Yifei Xue <xueyifei@huawei.com>