Fix default compute driver name for newton

Since change I65a537292aa8eda9f3d89e408caa50c445f2050a to nova,
long form names are not supported anymore.

Change-Id: Iaadcccd0cf39134e43de8aa9f7b505ecb39caeb1
diff --git a/nova/files/newton/nova-controller.conf.Debian b/nova/files/newton/nova-controller.conf.Debian
index 77e53eb..0bb3106 100644
--- a/nova/files/newton/nova-controller.conf.Debian
+++ b/nova/files/newton/nova-controller.conf.Debian
@@ -41,7 +41,7 @@
 scheduler_host_manager=host_manager
 use_forwarded_for=False
 reservation_expire=86400
-compute_driver = nova.virt.libvirt.LibvirtDriver
+compute_driver = libvirt.LibvirtDriver
 rootwrap_config = /etc/nova/rootwrap.conf
 auth_strategy = keystone
 firewall_driver=nova.virt.firewall.NoopFirewallDriver
diff --git a/nova/files/newton/nova-controller.conf.RedHat b/nova/files/newton/nova-controller.conf.RedHat
index 3d5263c..c3b92c3 100644
--- a/nova/files/newton/nova-controller.conf.RedHat
+++ b/nova/files/newton/nova-controller.conf.RedHat
@@ -38,7 +38,7 @@
 scheduler_host_manager=host_manager
 use_forwarded_for=False
 reservation_expire=86400
-compute_driver = nova.virt.libvirt.LibvirtDriver
+compute_driver = libvirt.LibvirtDriver
 rootwrap_config = /etc/nova/rootwrap.conf
 auth_strategy = keystone
 firewall_driver=nova.virt.firewall.NoopFirewallDriver