[milo] Add BuildSummary and common models.

milo/api/resp/builder.go

 // Copyright 2015 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package resp
 
-import "time"
+import (
+        "time"
+
+        "github.com/luci/luci-go/milo/appengine/common/model"
+)
 
 // Interval is a time interval which has a start, an end and a duration.
 type Interval struct {
         Started  time.Time     // when did this interval start
         Finished time.Time     // when did this interval finish
         Duration time.Duration // length of the interval; may be non-zero if Finished is zero
 }
 
 // BuildSummary is a summary of a build, with just enough information for display
 // on a builders page, with an optional field to return the whole build
 // information if available.
 type BuildSummary struct {
         // Link to the build.
         Link *Link
 
         // Status of the build.
-        Status Status
+        Status model.Status
 
         // Pending is time interval that this build was pending.
         PendingTime Interval
 
         // Execution is time interval that this build was executing.
         ExecutionTime Interval
 
         // Revision is the main revision of the build.
         // TODO(hinoka): Maybe use a commit object instead?
         Revision string
@@ skipping 35 matching lines @@
         NextCursor string `json:",omitempty"`
 }
 
 // MachinePool represents the capacity and availability of a builder.
 type MachinePool struct {
         Connected int
         Total     int
         Free      int
         Used      int
 }