Fix dependencies nsx packages from openvswitch-datapath

Because we accepted 3.13 kernel for ubuntu which has openvswitch datapapth
kernel module included, fuel 6.0 doesn't install openvswitch-datapath package.
This patch install it manually for NSX.

Change-Id: Id3d22f7f25fc4152a7269837826969dfa2f65340
Closes-bug:  1397331
Merge "Fix dependencies nsx packages from openvswitch-datapath"