Add multiple device/os filtering and a config file.

build/android/pylib/remote/device/example.config

Index: build/android/pylib/remote/device/example.config
diff --git a/build/android/pylib/remote/device/example.config b/build/android/pylib/remote/device/example.config
new file mode 100644
index 0000000000000000000000000000000000000000..c3820471a525eaa37500801f8548bddee9ac030d
--- /dev/null
+++ b/build/android/pylib/remote/device/example.config
@@ -0,0 +1,16 @@
+{
+"remote_device": ["Galaxy S4", "Galaxy S3"],
+"remote_device_os": ["4.4.2", "4.4.4"],
+"remote_device_minimum_os": "4.4.2"
+"api_address": www.example.com
+"api_port": "80",
+"api_protocol": "http",
+"api_secret": "apisecret",
+"api_key": "apikey",
+"timeouts": {
+              "queueing": 600,
+              "installing": 600,
+              "in-progress": 1800,
+              "unknown": 300
+            }
+}