Migrate from nose to testr

Part of blueprint grizzly-testtools

Change-Id: Ia53b0987b1e890a96b190f4b1a47dde4bf84fb6f
Remove gettext.install from quantumclient.__init__

fix bug 1097628

Change-Id: Ic6f2dfb4593fa507fb788786616bff6af3cbb896
Merge "Remove gettext.install from quantumclient.__init__"