Revert "remove credstash"

This reverts commit 7db1bfbb77.

wsgi.py

@@ -1,5 +1,12 @@
-from app import create_app
+import os
 
+from app import create_app
+from credstash import getAllSecrets
+
+
+# On AWS get secrets and export to env, skip this on Cloud Foundry
+if os.getenv('VCAP_SERVICES') is None:
+    os.environ.update(getAllSecrets(region="eu-west-1"))
 
 application = create_app()