Make nova only use the nova account

Each service should only be using that service's user account within its
configuration, in order to reduce the possible impact of credential
leaks. Start with nova, other services will follow.

Change-Id: I6b3fef5de05d5e0cc032b83a2ed834f1c997a048
diff --git a/lib/neutron b/lib/neutron
index a8cc953..da21d46 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -485,7 +485,7 @@
     local conf=${1:-$NOVA_CONF}
     iniset $conf neutron auth_type "password"
     iniset $conf neutron auth_url "$KEYSTONE_SERVICE_URI"
-    iniset $conf neutron username "$Q_ADMIN_USERNAME"
+    iniset $conf neutron username nova
     iniset $conf neutron password "$SERVICE_PASSWORD"
     iniset $conf neutron user_domain_name "$SERVICE_DOMAIN_NAME"
     iniset $conf neutron project_name "$SERVICE_PROJECT_NAME"