It's novaclinet that needs to be restricted, not neutronclient...

setup.py

@@ -14,11 +14,11 @@ with open(os.path.join('cloudbridge', '__init__.py')) as f:
             break
 
 base_reqs = ['bunch>=1.0.1', 'six>=1.10.0', 'retrying>=1.3.3']
-openstack_reqs = ['python-novaclient>=7.0.0',
+openstack_reqs = ['python-novaclient==7.0.0',
                   'python-glanceclient>=2.5.0',
                   'python-cinderclient>=1.9.0',
                   'python-swiftclient>=3.2.0',
-                  'python-neutronclient>=6.0.0, <=7.0.0',
+                  'python-neutronclient>=6.0.0',
                   'python-keystoneclient>=3.8.0']
 aws_reqs = ['boto>=2.38.0']
 full_reqs = base_reqs + aws_reqs + openstack_reqs