fix broken classes

these files are empty:
* linux/network/interface/bond_ovs_dvr.yml is not valid yaml
* glusterfs/cluster.yml is not valid yaml
* linux/network/interface/bond_vlan_dvr.yml is not valid yaml
* jenkins/master/single.yml is not valid yaml

Change-Id: I9c27d6ea41fcad0e14a28097eac7cfe540fb2983
diff --git a/ceilometer/server/single.yml b/ceilometer/server/single.yml
index a8b1f90..9758af2 100644
--- a/ceilometer/server/single.yml
+++ b/ceilometer/server/single.yml
@@ -1,7 +1,7 @@
 classes:
 - service.ceilometer.server.single
 parameters:
-  ceilometer:	
+  ceilometer:
     server:
       database:
         influxdb: