pytest collect sync_gateway tests

collect_sg.sh

root@ubuntu:~/workspace/test_repo_updater# pytest mobile-testkit/testsuites/syncgateway/functional/tests --collect-only 
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/_pytest/config.py", line 338, in _importconftest
    mod = conftestpath.pyimport()
  File "/usr/local/lib/python2.7/dist-packages/py/_path/local.py", line 650, in pyimport
    __import__(modname)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/assertion/rewrite.py", line 207, in load_module
    py.builtin.exec_(co, mod.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/py/_builtin.py", line 221, in exec_
    exec2(obj, globals, locals)
  File "<string>", line 7, in exec2
  File "/root/workspace/test_repo_updater/mobile-testkit/testsuites/syncgateway/functional/tests/conftest.py", line 5, in <module>
    from keywords.ClusterKeywords import ClusterKeywords
  File "/root/workspace/test_repo_updater/mobile-testkit/keywords/ClusterKeywords.py", line 14, in <module>
    from libraries.testkit.cluster import Cluster
  File "/root/workspace/test_repo_updater/mobile-testkit/libraries/testkit/cluster.py", line 9, in <module>
    from libraries.testkit.server import Server
  File "/root/workspace/test_repo_updater/mobile-testkit/libraries/testkit/server.py", line 12, in <module>
    from keywords.couchbaseserver import create_internal_rbac_bucket_user
  File "/root/workspace/test_repo_updater/mobile-testkit/keywords/couchbaseserver.py", line 7, in <module>
    from requests.packages.urllib3.exceptions import InsecureRequestWarning
ImportError: No module named packages.urllib3.exceptions
ERROR: could not load /root/workspace/test_repo_updater/mobile-testkit/testsuites/syncgateway/functional/tests/conftest.py