Add ceilometer

Implements bug 1023972. Add mongodb and pymongo installation.

Change-Id: I631dc8a37f3269e55112ec5a5f375d3a2fd3a604
diff --git a/files/apts/ceilometer-collector b/files/apts/ceilometer-collector
new file mode 100644
index 0000000..c67ade3
--- /dev/null
+++ b/files/apts/ceilometer-collector
@@ -0,0 +1,2 @@
+python-pymongo
+mongodb-server