Add rescheduler logs to the fluentd-elasticsearch configuration

cluster/addons/fluentd-elasticsearch/fluentd-es-image/td-agent.conf

@@ -218,6 +218,19 @@
   tag kube-scheduler
 </source>
 
+# Example:
+# I1104 10:36:20.242766       5 rescheduler.go:73] Running Rescheduler
+<source>
+  type tail
+  format multiline
+  format_firstline /^\w\d{4}/
+  format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
+  time_format %m%d %H:%M:%S.%N
+  path /var/log/rescheduler.log
+  pos_file /var/log/es-rescheduler.log.pos
+  tag rescheduler
+</source>
+
 #<filter kubernetes.**>
 #  type kubernetes_metadata
 #</filter>