Create service and test directories when they don't exist

template/lib/models.py.j2

@@ -0,0 +1,20 @@
+from __future__ import unicode_literals
+import boto3
+from moto.core import BaseBackend, BaseModel
+
+
+class {{ service_class }}Backend(BaseBackend):
+    def __init__(self, region_name=None):
+        super({{ service_class }}Backend, self).__init__()
+        self.region_name = region_name
+
+    def reset(self):
+        region_name = self.region_name
+        self.__dict__ = {}
+        self.__init__(region_name)
+
+    # add methods from here
+
+
+available_regions = boto3.session.Session().get_available_regions("{{ service }}")
+{{ service }}_backends = {region: {{ service_class }}Backend for region in available_regions}