deprecation of use_neutron option breaks ostf

[Nikita Karpin]

Upstream patch https://review.openstack.org/#/c/413479/ deprecates use_neutron option, but nova code on Fuel CI still uses use_neutron option. OSTF tests fail with errors:

 - Create volume and boot instance from it (failure) Default private network 'admin_internal_net' isn't present. Please verify it is properly created. Please refer to OpenStack logs for more details.
  - Create volume and attach it to instance (failure) Default private network 'admin_internal_net' isn't present. Please verify it is properly created. Please refer to OpenStack logs for more details.
  - Check network connectivity from instance via floating IP (failure) Server can not be created. Please refer to OpenStack logs for more details.
  - Check network parameters (error)
  - Launch instance (failure) Default private network 'admin_internal_net' isn't present. Please verify it is properly created. Please refer to OpenStack logs for more details.
  - Launch instance with file injection (failure) Default private network 'admin_internal_net' isn't present. Please verify it is properly created. Please refer to OpenStack logs for more details.
  - Launch instance, create snapshot, launch instance from snapshot (failure) Default private network 'admin_internal_net' isn't present. Please verify it is properly created. Please refer to OpenStack logs for more details.

Example of failed job:

https://ci.fuel-infra.org/job/master.puppet-openstack.fuel-library.pkgs.ubuntu.smoke_neutron/8243/console

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/438976

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/438976
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=6bb1ac1857ddf9d5959db3a7b24d3fe5a33cae95
Submitter: Jenkins
Branch: master

commit 6bb1ac1857ddf9d5959db3a7b24d3fe5a33cae95
Author: Mykyta Karpin <email address hidden>
Date: Tue Feb 28 16:20:44 2017 +0200

    Workaround of use_neutron option

    Currently Fuel CI in master jobs uses old nova code,
    but upstream patch https://review.openstack.org/#/c/413479
    deprecates use_neutron option, this will break CI. So until
    we get nova code from Ocata we need a workaround to unblock CI.

    Change-Id: I33b4b754989eaa05f2fa15e02575c7ad85f478bc
    Related-Bug: #1668623

[Nikita Karpin (mkarpin)]

workaround deletion will be tracked in https://bugs.launchpad.net/fuel/+bug/1679585