Cleanup backend finding

moto/backends.py

@@ -0,0 +1,17 @@
+from moto.dynamodb import dynamodb_backend
+from moto.ec2 import ec2_backend
+from moto.elb import elb_backend
+from moto.s3 import s3_backend
+from moto.ses import ses_backend
+from moto.sqs import sqs_backend
+from moto.sts import sts_backend
+
+BACKENDS = {
+    'dynamodb': dynamodb_backend,
+    'ec2': ec2_backend,
+    'elb': elb_backend,
+    's3': s3_backend,
+    'ses': ses_backend,
+    'sqs': sqs_backend,
+    'sts': sts_backend,
+}