tryserver recipe_module: Add get_tags.

recipe_modules/depot_tools/example.expected/basic.json

Index: recipe_modules/depot_tools/example.expected/basic.json
diff --git a/recipe_modules/depot_tools/example.expected/basic.json b/recipe_modules/depot_tools/example.expected/basic.json
new file mode 100644
index 0000000000000000000000000000000000000000..e8ad01fe629358035e58b8114ef418d24a2809e4
--- /dev/null
+++ b/recipe_modules/depot_tools/example.expected/basic.json
@@ -0,0 +1,42 @@
+[
+  {
+    "cmd": [
+      "ls",
+      "RECIPE_PACKAGE_REPO[depot_tools]/download_from_google_storage.py"
+    ],
+    "name": "download_from_google_storage"
+  },
+  {
+    "cmd": [
+      "ls",
+      "RECIPE_PACKAGE_REPO[depot_tools]/cros"
+    ],
+    "name": "cros"
+  },
+  {
+    "cmd": [
+      "ls",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gn.py"
+    ],
+    "name": "gn_py_path"
+  },
+  {
+    "cmd": [
+      "ls",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py"
+    ],
+    "name": "gsutil_py_path"
+  },
+  {
+    "cmd": [
+      "ls",
+      "RECIPE_PACKAGE_REPO[depot_tools]/ninja"
+    ],
+    "name": "ninja_path"
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]