Setup basic Runtime with properties and platform.

recipes.py

Index: recipes.py
diff --git a/recipes.py b/recipes.py
index a94dd77747cbd257f94989a14a88b1dee6757caf..61496b3c12898e78dfc17bb335915d62c33d4a21 100755
--- a/recipes.py
+++ b/recipes.py
@@ -146,6 +146,14 @@ def run(package_deps, args, op_args):
 
   properties['recipe'] = args.recipe
 
+  # TODO(iannucci): A much better way to do this would be to dynamically
+  #   detect if the mirrors are actually available during the execution of the
+  #   recipe.
+  if ('use_mirror' not in properties and (
+    'TESTING_MASTERNAME' in os.environ or
+    'TESTING_SLAVENAME' in os.environ)):
+    properties['use_mirror'] = False
+
   os.environ['PYTHONUNBUFFERED'] = '1'
   os.environ['PYTHONIOENCODING'] = 'UTF-8'
 
@@ -163,6 +171,9 @@ def run(package_deps, args, op_args):
   old_cwd = os.getcwd()
   os.chdir(workdir)
 
+  # Generate our Runtime instance.
+  rt = recipe_run.Runtime(properties)
+
   # Construct our stream engines. We may want to share stream events with more
   # than one StreamEngine implementation, so we will accumulate them in a
   # "stream_engines" list and compose them into a MultiStreamEngine.
@@ -199,7 +210,7 @@ def run(package_deps, args, op_args):
 
     try:
       ret = recipe_run.run_steps(
-          properties, stream_engine,
+          rt, stream_engine,
           step_runner.SubprocessStepRunner(stream_engine),
           universe_view=universe_view)
     finally: