change sriovnicswitch to be first with openvswitch
change sriovnicswitch to be first with openvswitch

In commit I77650be5f04775a72e2bdf694f93988825a84b72
neutron ovs mechanism driver can bind direct port
with ovs SR-IOV hardware offload feature. currently both
feature can't co-exist together. To allow ovs and
sriovnicswitch to still work together, sriovnicswitch
should be before openvswitch.

Change-Id: Id19d65715d40d64f041bfe219afff98876fd7766

dprince/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates