Revert "remove credstash"

This reverts commit 7db1bfbb77.

server_commands.py

@@ -1,6 +1,7 @@
 from flask.ext.script import Manager, Server
 from flask_migrate import Migrate, MigrateCommand
 from app import (create_app, db, commands)
+from credstash import getAllSecrets
 import os
 
 default_env_file = '/home/ubuntu/environment'
@@ -10,6 +11,10 @@ if os.path.isfile(default_env_file):
     with open(default_env_file, 'r') as environment_file:
         environment = environment_file.readline().strip()
 
+# 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"))
+
 from app.config import configs
 
 os.environ['NOTIFY_API_ENVIRONMENT'] = configs[environment]