[task scheduler] Move files from build_scheduler/ to task_scheduler/

task_scheduler/go/db/testutil.go

 package db
 
 import (
         "fmt"
         "net/url"
         "testing"
         "time"
 
         assert "github.com/stretchr/testify/require"
 
@@ skipping 826 matching lines @@
                 assert.Equal(t, "r0", actual[0].Repo)
                 assert.Equal(t, "r1", actual[1].Repo)
                 assert.Equal(t, "r2", actual[2].Repo)
                 for _, rc := range actual {
                         assert.Equal(t, 0, len(rc.TaskComments))
                         assert.Equal(t, 0, len(rc.TaskSpecComments))
                         assert.Equal(t, 0, len(rc.CommitComments))
                 }
         }
 }