x/ref: Restructure services/mgmt/lib

The renamings:

services/mgmt/lib/binary/impl.go      -> services/binary/binarylib/client.go
services/mgmt/lib/binary/impl_test.go -> services/binary/binarylib/client_test.go

services/mgmt/lib/acls     -> services/internal/acls
services/mgmt/lib/fs       -> services/internal/fs
services/mgmt/lib/packages -> services/internal/packages
services/mgmt/lib/testutil -> services/internal/servicetest

Change-Id: Icabfbcc4e9a20fd5bf5e2a2761f98a016560d409
diff --git a/services/device/internal/impl/debug_acls_test.go b/services/device/internal/impl/debug_acls_test.go
index 57448c6..629998d 100644
--- a/services/device/internal/impl/debug_acls_test.go
+++ b/services/device/internal/impl/debug_acls_test.go
@@ -16,7 +16,7 @@
 	"v.io/v23/services/permissions"
 	"v.io/v23/verror"
 
-	mgmttest "v.io/x/ref/services/mgmt/lib/testutil"
+	"v.io/x/ref/services/internal/servicetest"
 	"v.io/x/ref/test/testutil"
 )
 
@@ -43,8 +43,8 @@
 	defer cleanup()
 
 	// Set up the device manager.
-	dmh := mgmttest.RunCommand(t, sh, nil, deviceManagerCmd, "dm", root, helperPath, "unused_app_repo_name", "unused_curr_link")
-	mgmttest.ReadPID(t, dmh)
+	dmh := servicetest.RunCommand(t, sh, nil, deviceManagerCmd, "dm", root, helperPath, "unused_app_repo_name", "unused_curr_link")
+	servicetest.ReadPID(t, dmh)
 	claimDevice(t, ctx, "dm", "mydevice", noPairingToken)
 
 	// Create the local server that the app uses to let us know it's ready.
@@ -198,8 +198,8 @@
 	}
 
 	// Set up the device manager.
-	dmh := mgmttest.RunCommand(t, sh, nil, deviceManagerCmd, "--log_dir="+extraLogDir, "dm", root, helperPath, "unused", "unused_curr_link")
-	mgmttest.ReadPID(t, dmh)
+	dmh := servicetest.RunCommand(t, sh, nil, deviceManagerCmd, "--log_dir="+extraLogDir, "dm", root, helperPath, "unused", "unused_curr_link")
+	servicetest.ReadPID(t, dmh)
 
 	// Make some users.
 	selfCtx := ctx