x/ref: Restructure services/identity

The renamings:

services/identity/modules        -> services/identity/identitylib
services/identity/identityd_test -> services/identity/internal/identityd_test

Change-Id: Ic9b20adb28f2a32d7682d1404b8ea92f722f2693
MultiPart: 1/2
diff --git a/cmd/servicerunner/main.go b/cmd/servicerunner/main.go
index 58d8311..cda6bd0 100644
--- a/cmd/servicerunner/main.go
+++ b/cmd/servicerunner/main.go
@@ -20,7 +20,7 @@
 	"v.io/x/ref/envvar"
 	"v.io/x/ref/lib/signals"
 	"v.io/x/ref/profiles"
-	identityd "v.io/x/ref/services/identity/modules"
+	"v.io/x/ref/services/identity/identitylib"
 	"v.io/x/ref/services/mounttable/mounttablelib"
 	"v.io/x/ref/test/expect"
 	"v.io/x/ref/test/modules"
@@ -127,7 +127,7 @@
 	panicOnError(err)
 	panicOnError(updateVars(h, vars, "WSPR_ADDR"))
 
-	h, err = sh.Start(identityd.TestIdentitydCommand, nil, "--v23.tcp.protocol=ws", "--v23.tcp.address=127.0.0.1:0", "--v23.proxy=test/proxy", "--http-addr=localhost:0")
+	h, err = sh.Start(identitylib.TestIdentitydCommand, nil, "--v23.tcp.protocol=ws", "--v23.tcp.address=127.0.0.1:0", "--v23.proxy=test/proxy", "--http-addr=localhost:0")
 	panicOnError(err)
 	panicOnError(updateVars(h, vars, "TEST_IDENTITYD_NAME", "TEST_IDENTITYD_HTTP_ADDR"))
 
diff --git a/services/identity/identityd/identityd_v23_test.go b/services/identity/identityd/identityd_v23_test.go
index 36e9b28..474c7b2 100644
--- a/services/identity/identityd/identityd_v23_test.go
+++ b/services/identity/identityd/identityd_v23_test.go
@@ -69,7 +69,7 @@
 	// In production, the two share a common root certificate and thus
 	// recognize each other. The same is done here, i.Principal()
 	// wields the root key.
-	identityd := i.BuildV23Pkg("v.io/x/ref/services/identity/identityd_test")
+	identityd := i.BuildV23Pkg("v.io/x/ref/services/identity/internal/identityd_test")
 	creds, err := i.Shell().NewChildCredentials("identityd")
 	if err != nil {
 		i.Fatal(err)
diff --git a/services/identity/modules/test_identityd.go b/services/identity/identitylib/test_identityd.go
similarity index 99%
rename from services/identity/modules/test_identityd.go
rename to services/identity/identitylib/test_identityd.go
index 724445a..6287264 100644
--- a/services/identity/modules/test_identityd.go
+++ b/services/identity/identitylib/test_identityd.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package core
+package identitylib
 
 import (
 	"flag"
diff --git a/services/identity/identityd_test/main.go b/services/identity/internal/identityd_test/main.go
similarity index 100%
rename from services/identity/identityd_test/main.go
rename to services/identity/internal/identityd_test/main.go