Limit mock dependency to version 1.0.1

1.1.0 dropped Python 2.6 support, and at least one call assert function
currently used by tests.

setup.py

@@ -216,7 +216,7 @@ def run_setup(extensions):
         keywords='cassandra,cql,orm',
         include_package_data=True,
         install_requires=dependencies,
-        tests_require=['nose', 'mock', 'PyYAML', 'pytz', 'sure'],
+        tests_require=['nose', 'mock<=1.0.1', 'PyYAML', 'pytz', 'sure'],
         classifiers=[
             'Development Status :: 5 - Production/Stable',
             'Intended Audience :: Developers',

test-requirements.txt

@@ -2,7 +2,7 @@
 blist
 scales
 nose
-mock
+mock<=1.0.1
 ccm>=2.0
 unittest2
 PyYAML

tox.ini

@@ -3,7 +3,7 @@ envlist = py26,py27,pypy,py33,py34
 
 [base]
 deps = nose
-       mock
+       mock<=1.0.1
        PyYAML
        six