apiserver/logger: adding command for debug log

utils/tailer/tailer_test.go

 // Copyright 2013 Canonical Ltd.
 // Licensed under the AGPLv3, see LICENCE file for details.
 
 package tailer_test
 
 import (
         "bufio"
         "bytes"
         "fmt"
         "io"
@@ skipping 43 matching lines @@
         "yankee yankee\n",
         "zulu zulu\n",
 }
 
 var tests = []struct {
         description           string
         data                  []string
         initialLinesWritten   int
         initialLinesRequested int
         bufferSize            int
-        filter                tailer.TailerFilterFunc
+        filter                tailer.FilterFunc
         injector              func(*tailer.Tailer, *readSeeker) func([]string)
         initialCollectedData  []string
         appendedCollectedData []string
         err                   string
 }{{
         description: "lines are longer than buffer size",
         data: []string{
                 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz\n",
                 "0123456789012345678901234567890123456789012345678901\n",
         },
@@ skipping 423 matching lines @@
         }
         if newPos < 0 {
                 return 0, fmt.Errorf("negative position: %d", newPos)
         }
         if newPos >= 1<<31 {
                 return 0, fmt.Errorf("position out of range: %d", newPos)
         }
         r.pos = int(newPos)
         return newPos, nil
 }