add event pipeline yaml

Ceilometer as added support for an event pipeline to enable
transformations and publishing of events. this patch adds the new
event_pipeline.yaml file

Change-Id: I7018a57e7db3690d72fd7c7d5090e6e61cf73e18
diff --git a/lib/ceilometer b/lib/ceilometer
index 5d5b987..67a546e 100644
--- a/lib/ceilometer
+++ b/lib/ceilometer
@@ -190,6 +190,7 @@
     iniset $CEILOMETER_CONF DEFAULT policy_file $CEILOMETER_CONF_DIR/policy.json
 
     cp $CEILOMETER_DIR/etc/ceilometer/pipeline.yaml $CEILOMETER_CONF_DIR
+    cp $CEILOMETER_DIR/etc/ceilometer/event_pipeline.yaml $CEILOMETER_CONF_DIR
     cp $CEILOMETER_DIR/etc/ceilometer/api_paste.ini $CEILOMETER_CONF_DIR
     cp $CEILOMETER_DIR/etc/ceilometer/event_definitions.yaml $CEILOMETER_CONF_DIR