Milo: Add builder name to builder page

milo/appengine/buildbot/builder.go

Index: milo/appengine/buildbot/builder.go
diff --git a/milo/appengine/buildbot/builder.go b/milo/appengine/buildbot/builder.go
index c86758878ae316ee60a5863126257886f6d4452c..86195e4fc7ace8e5b38d1e77bc2a289c3b9464bc 100644
--- a/milo/appengine/buildbot/builder.go
+++ b/milo/appengine/buildbot/builder.go
@@ -114,7 +114,9 @@ func getCurrentBuilds(c context.Context, master *buildbotMaster, builderName str
 // * Current Builds from querying the master json from the datastore.
 // * Recent Builds from a cron job that backfills the recent builds.
 func builderImpl(c context.Context, masterName, builderName string) (*resp.Builder, error) {
-	result := &resp.Builder{}
+	result := &resp.Builder{
+		Name: builderName,
+	}
 	master, t, err := getMasterJSON(c, masterName)
 	switch {
 	case err == ds.ErrNoSuchEntity: