[octane] Octane should prevent Fuel from recreating default Neutron networks

[Roman Sokolkov]

Upgrading from 6.1 to 8.0.

While upgrading controllers (2nd,3rd) Fuel tries to check and recreate (if needed) default networks and routers:
net04
net04_ext
router04
etc.

My specific issue:
To workaround https://bugs.launchpad.net/fuel/+bug/1590670 i've manually changed
network net04_ext type to "flat". While upgrading controllers deployment failed with error

2016-06-23 07:58:11 +0000 /Stage[main]/Main/Neutron_network[net04_ext]/provider_network_type (err): change from flat to local failed: Property provider_network_type does not support being updated

More common issue:
We should prevent Fuel from creating ANY resources in OpenStack while upgrade.
Real world cloud will probably will have these networks deleted or reconfigured.

Task openstack-network/networks.pp should be somehow disabled while upgrade.

[Bug Checker Bot (bug-checker)]

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