dashboard: transfer ownership of DragonflyBSD 5.6 builder

Change-Id: I9077f043ba43192fad2b2151ae37ab41c1d27aa9
Reviewed-on: https://go-review.googlesource.com/c/build/+/208717
Reviewed-by: Bryan C. Mills <bcmills@google.com>

dashboard/builders.go

@@ -353,16 +353,12 @@ var Hosts = map[string]*HostConfig{
 		env:         []string{"GOROOT_BOOTSTRAP=/usr/pkg/go112"},
 		OwnerGithub: "bsiegert",
 	},
-	// Our DragonFly builder doesn't yet run on GCE
-	// (golang.org/issue/23060), so @bradfitz currently runs the
-	// release version at home, and @tdfbsd runs one somewhere
-	// running the bleeding edge version.
-	"host-dragonfly-amd64-bradfitz": &HostConfig{
+	"host-dragonfly-amd64-5_6": &HostConfig{
 		IsReverse:   true,
 		ExpectNum:   1,
-		Notes:       "DragonFly BSD release version",
+		Notes:       "DragonFly BSD release version, run by DragonFly team",
 		env:         []string{"GOROOT_BOOTSTRAP=/usr/local/go"},
-		OwnerGithub: "bradfitz",
+		OwnerGithub: "tuxillo",
 	},
 	"host-dragonfly-amd64-master": &HostConfig{
 		IsReverse:   true,
@@ -2344,7 +2340,7 @@ func init() {
 	})
 	addBuilder(BuildConfig{
 		Name:              "dragonfly-amd64-5_6",
-		HostType:          "host-dragonfly-amd64-bradfitz",
+		HostType:          "host-dragonfly-amd64-5_6",
 		Notes:             "DragonFly BSD 5.6 release",
 		shouldRunDistTest: noTestDir,
 		SkipSnapshot:      true,