freeze requirements in tests

Author: kelvich

tests2/requirements.txt

@@ -1,4 +1,18 @@
-psycopg2
-aiopg
-aioprocessing
-docker-py
+aiopg==0.12.0
+aioprocessing==0.0.1
+astroid==1.4.8
+docker-py==1.10.6
+docker-pycreds==0.2.1
+isort==4.2.5
+lazy-object-proxy==1.2.2
+mccabe==0.5.2
+pdb==0.1
+pi==0.1.2
+psycopg2==2.6.2
+pylint==1.6.4
+python-gnupg==0.3.9
+PyYAML==3.12
+requests==2.12.1
+six==1.10.0
+websocket-client==0.37.0
+wrapt==1.10.8