Add a prefix to the POS file for Fluentd to Elasticsearch

cluster/addons/fluentd-elasticsearch/fluentd-es-image/Makefile

@@ -1,6 +1,6 @@
 .PHONY:	build push
 
-TAG = 1.2
+TAG = 1.3
 
 build:	
 	sudo docker build -t kubernetes/fluentd-elasticsearch:$(TAG) .

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

@@ -38,7 +38,7 @@
   format json
   time_key time
   path /var/lib/docker/containers/*/*-json.log
-  pos_file /var/lib/docker/containers/containers.log.pos
+  pos_file /var/lib/docker/containers/es-containers.log.pos
   time_format %Y-%m-%dT%H:%M:%S
   tag docker.*
   read_from_head true
@@ -62,7 +62,7 @@
   type tail
   format none
   path /varlog/kubelet.log
-  pos_file /varlog/kubelet.log.pos
+  pos_file /varlog/es-kubelet.log.pos
   tag kubelet
 </source>