Improve Neutron support in networking

New support in Neutron:
*neutron_url_timeout
*neutron_default_tenant_id
*neutron_ovs_bridge
*neutron_extension_sync_interval
*neutron_ca_certificates_file

Change-Id: Ia05c493c7f5ce93944ba73940b1d39d593e70952
Remove nova_volume

nova_volume has been depreciated, in favour of cinder.

Now that we are working on the Havana branch,
it seems like an appropriate time to remove it.

Change-Id: Ief063f92a719f950507d2ad8e21eb2cc44691bd0
Disable 80chars/class_parameter_defaults checks

* Disable warnings for "line has more than 80 characters"
* Disable warnings for "parameterised class parameter without a default value"

We do not wish to track warnings for such violations.

Change-Id: I275e38e3760ee2199266fda1f81de4631ad675b1
updated fixtures to correct postgresql link

Change-Id: Ic07b2c457d6fbb28f71737a4404cf3996ea223ef
Merge "Remove nova_volume"