tryserver recipe_module: Add get_tags.

recipe_modules/tryserver/example.expected/basic_tags.json

Index: recipe_modules/tryserver/example.expected/basic_tags.json
diff --git a/recipe_modules/tryserver/example.expected/basic_tags.json b/recipe_modules/tryserver/example.expected/basic_tags.json
new file mode 100644
index 0000000000000000000000000000000000000000..9ca4ee365f295c4f14c5f1ae4e86f9965748e29f
--- /dev/null
+++ b/recipe_modules/tryserver/example.expected/basic_tags.json
@@ -0,0 +1,59 @@
+[
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_PACKAGE_REPO[depot_tools]/git_footers.py",
+      "--json",
+      "/path/to/tmp/json"
+    ],
+    "name": "parse description",
+    "stdin": "hihihi\nfoo:bar\nbam:baz",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"Foo\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"bar\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "echo",
+      "OrderedDict([('Foo', ['bar'])])"
+    ],
+    "name": "patch_text test"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_PACKAGE_REPO[depot_tools]/git_footers.py",
+      "--json",
+      "/path/to/tmp/json"
+    ],
+    "name": "parse description (2)",
+    "stdin": "hihihi\nfoo:bar\nbam:baz",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"Foo\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"bar\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "echo",
+      "['bar']"
+    ],
+    "name": "patch_text test (2)"
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]