Plugin contains changes that allow to work with
python-neutron-lib-0.0.1, this means that we no longer need to carry
this package inside the plugin.
Plugin git commit revision: 53beb032bdaa2090820e78e166054450c0273b9f
Change-Id: I86a8dbb5d97163b6562c3757e2007a4d41a5d159
neutron-lib 0.0.1 breaks Neutron NSX security group functionality.
Package available with Fuel 9 is too old (0.0.1) for Neutron NSX plugin,
we need version higher than 0.0.1.
We need to raise plugins package priority using APT preferences file,
because by default plugin repository on the master node has lower
priority than default repositories.
Closes-bug: #1632233
Change-Id: Ib5e19729a6ae456100fefd4a5cf8a1d1b9160cbc