BUCKify XosClient app to fix buck build

Change-Id: I5c9e6127ef3c00b79d12163fc82d4137ad00b407
diff --git a/apps/xosclient/BUCK b/apps/xosclient/BUCK
new file mode 100644
index 0000000..ec03b7b
--- /dev/null
+++ b/apps/xosclient/BUCK
@@ -0,0 +1,15 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//lib:javax.ws.rs-api',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+)
+
+onos_app (
+    title = 'XOS Client App',
+    category = 'Utility',
+    url = 'http://onosproject.org',
+    description = 'XOS client service',
+)