Clean up test environment and remove unused imports.

First round of adding more complete unit test coverage.

Change-Id: Ic1979c499ca6fcb784892a95954a3527539c4e53

.mailmap

@@ -0,0 +1,2 @@
+<josh.kearney@pistoncloud.com> <josh@jk0.org>
+<matt.joyce@cloudscaling.com> <matt@nycresistor.com>

openstackclient/common/clientmanager.py

@@ -20,7 +20,6 @@
 
 import logging
 
-from openstackclient.common import exceptions as exc
 from openstackclient.compute import client as compute_client
 from openstackclient.identity import client as identity_client
 from openstackclient.image import client as image_client

openstackclient/common/utils.py

@@ -23,8 +23,6 @@ import os
 import sys
 import uuid
 
-import prettytable
-
 from openstackclient.common import exceptions
 
 

openstackclient/openstack/common/setup.py

@@ -78,10 +78,6 @@ def parse_requirements(requirements_files=['requirements.txt',
         # -f lines are for index locations, and don't get used here
         elif re.match(r'\s*-f\s+', line):
             pass
-        # argparse is part of the standard library starting with 2.7
-        # adding it to the requirements list screws distro installs
-        elif line == 'argparse' and sys.version_info >= (2, 7):
-            pass
         else:
             requirements.append(line)