opsworks: implement create_stack

moto/opsworks/__init__.py

@@ -0,0 +1,13 @@
+from __future__ import unicode_literals
+from .models import opsworks_backends
+from ..core.models import MockAWS
+
+opsworks_backend = opsworks_backends['us-east-1']
+
+
+def mock_opsworks(func=None):
+    if func:
+        return MockAWS(opsworks_backends)(func)
+    else:
+        return MockAWS(opsworks_backends)
+