update py renderer to use the standard template systems

salt/renderers/py.py

@@ -5,9 +5,13 @@ The sls file should contain a function called ``sls`` which returns high state
 data
 '''
 
+# Import python libs
 import imp
 import os
 
+# Import Salt libs
+from salt.exceptions import SaltRenderError
+import salt.utils.templates
 
 def render(template, env='', sls=''):
     '''
@@ -16,14 +20,17 @@ def render(template, env='', sls=''):
     if not os.path.isfile(template):
         return {}
 
-    mod = imp.load_source(
-            os.path.basename(template).split('.')[0],
-            template
-            )
-    mod.salt = __salt__
-    mod.grains = __grains__
-    mod.pillar = __pillar__
-    mod.env = env
-    mod.sls = sls
+    tmp_data = salt.utils.templates.py(
+            template_file,
+            True,
+            salt=__salt__,
+            grains=__grains__,
+            opts=__opts__,
+            pillar=__pillar__,
+            env=env,
+            sls=sls)
+    if not tmp_data.get('result', False):
+        raise SaltRenderError(tmp_data.get('data',
+            'Unknown render error in yaml_jinja renderer'))
 
-    return mod.run()
+    return tmp_data['data']