BZ #1118826 - Trying to use vlan with Neutron fails install.

https://bugzilla.redhat.com/show_bug.cgi?id=1118826

Turns out we need vlan in our driver list by default, as well as gre. Also added
local to keep consistent with HA manifests.
Merge pull request #310 from jguiditta/BZ1118826_vlan_type_driver

BZ #1118826 - Trying to use vlan with Neutron fails install.