Fix for lack of required dependency with moto 1.0.0

setup.py

@@ -1,3 +1,4 @@
+"""Library install script for setuptools."""
 import ast
 import os
 import re
@@ -25,8 +26,9 @@ openstack_reqs = ['requests<2.13.0',
                   'python-keystoneclient>=3.8.0,<=3.10.0']
 aws_reqs = ['boto>=2.38.0,<=2.46.1']
 full_reqs = base_reqs + aws_reqs + openstack_reqs
+# httpretty is required with/for moto 1.0.0 or AWS tests fail
 dev_reqs = (['tox>=2.1.1', 'moto>=1.0.0', 'sphinx>=1.3.1', 'flake8>=3.3.0',
-             'flake8-import-order>=0.12'] + full_reqs)
+             'flake8-import-order>=0.12', 'httpretty==0.8.10'] + full_reqs)
 
 setup(name='cloudbridge',
       version=version,