Do not add new field in fluentd CRI log format.

cluster/addons/fluentd-elasticsearch/fluentd-es-configmap.yaml

@@ -99,7 +99,7 @@ data:
     # Json Log Example:
     # {"log":"[info:2016-02-16T16:04:05.930-08:00] Some log text here\n","stream":"stdout","time":"2016-02-17T00:04:05.931087621Z"}
     # CRI Log Example:
-    # 2016-02-17T00:04:05.931087621Z stdout [info:2016-02-16T16:04:05.930-08:00] Some log text here
+    # 2016-02-17T00:04:05.931087621Z stdout F [info:2016-02-16T16:04:05.930-08:00] Some log text here
     <source>
       type tail
       path /var/log/containers/*.log
@@ -114,7 +114,7 @@ data:
         time_format %Y-%m-%dT%H:%M:%S.%NZ
       </pattern>
       <pattern>
-        format /^(?<time>.+) (?<stream>stdout|stderr) (?<tag>.*) (?<log>.*)$/
+        format /^(?<time>.+) (?<stream>stdout|stderr) [^ ]* (?<log>.*)$/
         time_format %Y-%m-%dT%H:%M:%S.%N%:z
       </pattern>
     </source>