Add vault operations.

tests/test_glacier/test_glacier_server.py

@@ -0,0 +1,21 @@
+from __future__ import unicode_literals
+
+import json
+import sure  # noqa
+
+import moto.server as server
+from moto import mock_glacier
+
+'''
+Test the different server responses
+'''
+
+
+@mock_glacier
+def test_list_vaults():
+    backend = server.create_backend_app("glacier")
+    test_client = backend.test_client()
+
+    res = test_client.get('/1234bcd/vaults')
+
+    json.loads(res.data).should.equal({u'Marker': None, u'VaultList': []})