Include isolate.py in data for Android unit tests

build/secondary/tools/swarming_client/BUILD.gn

Index: build/secondary/tools/swarming_client/BUILD.gn
diff --git a/build/secondary/tools/swarming_client/BUILD.gn b/build/secondary/tools/swarming_client/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..171bc629e548ef6bad2a25784d6cabab3d94725a
--- /dev/null
+++ b/build/secondary/tools/swarming_client/BUILD.gn
@@ -0,0 +1,10 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+group("isolate_py") {
+  # Generated with:
+  # (cd tools/swarming_client; ../../build/print-python-deps.py isolate.py) > build/secondary/tools/swarming_client/isolate.pydeps
+  data = read_file("//build/secondary/tools/swarming_client/isolate.pydeps",
+                   "list lines")
+}