Remove n-cells, n-net and n-cauth

Remove nova cells v1 support, which also allows/necessitates removing
support for nova networks (which was only supported with cells v1) and
nova-consoleauth (which was required by cells v1 but is unnecessary
otherwise).

The Depends-On isn't really necessary, but it's here to make sure this
doesn't merge until we _really_ have killed cells v1.

I honestly expected this patch would be bigger.

Change-Id: I90316208d1af42c1659d3bee386f95e38aaf2c56
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
Depends-On: Ib0e0b708c46e4330e51f8f8fdfbb02d45aaf0f44
diff --git a/HACKING.rst b/HACKING.rst
index 3853eed..968306a 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -145,8 +145,8 @@
 * Global configuration that may be referenced in ``local.conf``, i.e. ``DEST``, ``DATA_DIR``
 * Global service configuration like ``ENABLED_SERVICES``
 * Variables used by multiple services that do not have a clear owner, i.e.
-  ``VOLUME_BACKING_FILE_SIZE`` (nova-compute, nova-volumes and cinder) or
-  ``PUBLIC_NETWORK_NAME`` (nova-network and neutron)
+  ``VOLUME_BACKING_FILE_SIZE`` (nova-compute and cinder) or
+  ``PUBLIC_NETWORK_NAME`` (only neutron but formerly nova-network too)
 * Variables that can not be cleanly declared in a project file due to
   dependency ordering, i.e. the order of sourcing the project files can
   not be changed for other reasons but the earlier file needs to dereference a