Add service_test GN template

services/service_manager/public/cpp/test/BUILD.gn

Index: services/service_manager/public/cpp/test/BUILD.gn
diff --git a/services/service_manager/public/cpp/test/BUILD.gn b/services/service_manager/public/cpp/test/BUILD.gn
index e9fb8c9c5253d440ee96632e1b6dec3d82e7341a..569aac006bac2acd750e499a20a4b4a3a55e52e6 100644
--- a/services/service_manager/public/cpp/test/BUILD.gn
+++ b/services/service_manager/public/cpp/test/BUILD.gn
@@ -26,3 +26,22 @@ source_set("run_all_service_tests") {
     "//services/service_manager/background:main",
   ]
 }
+
+# TODO(rockot): Remove this when all consumers of :run_all_service_tests are
+# ported to service_test targets.
+source_set("run_all_service_tests_with_catalog") {
+  testonly = true
+
+  sources = [
+    "run_all_service_tests_with_catalog.cc",
+    "service_test_catalog.h",
+  ]
+
+  deps = [
+    "//base",
+    "//base/test:test_support",
+    "//mojo/edk/system",
+    "//services/catalog:lib",
+    "//services/service_manager/background:lib",
+  ]
+}