assert[Greater,Equal] -> assert_{,not_}called

assert[Greater,Equal] -> assert_{,not_}called

assertEqual(mock_xxx.call_count, 1) -> mock_xxx.assert_called_once
assertEqual(mock_xxx.call_count, 0) -> mock_xxx.assert_not_called
assertGreater(mock.call_count, 0) -> mock.assert_called()
assertGreaterEqual(mock.call_count, 1) -> mock.assert_called()

JIRA: YARDSTICK-1069
Change-Id: I890084d120c8e78304e169e2a0e5d30011a41525
Signed-off-by: Emma Foley <emma.l.foley@intel.com>