Add enabled file for rally dashboard.
diff --git a/horizon/files/enabled/rally_dashboard.py b/horizon/files/enabled/rally_dashboard.py
new file mode 100644
index 0000000..fbc101e
--- /dev/null
+++ b/horizon/files/enabled/rally_dashboard.py
@@ -0,0 +1,3 @@
+
+DASHBOARD = 'benchmark'
+ADD_INSTALLED_APPS = ['benchmark_dashboard']