Activated loading of env depending on if it exist

filter_plugins/has_env.py

@@ -0,0 +1,14 @@
+import os
+
+def has_env(application_id, base_dir='.'):
+    """
+    Check if env.j2 exists under roles/{{ application_id }}/templates/env.j2
+    """
+    path = os.path.join(base_dir, 'roles', application_id, 'templates', 'env.j2')
+    return os.path.isfile(path)
+
+class FilterModule(object):
+    def filters(self):
+        return {
+            'has_env': has_env,
+        }