tree 8b0ab97e05c8ed669d102544ba9ed4cf0ceae725
parent 1cfbc4a70ed1d5ae72e5dbad356c6215977ceec1
author ivan-zhu <bozhu@linux.vnet.ibm.com> 1359949876 +0800
committer ivan-zhu <bozhu@linux.vnet.ibm.com> 1359950501 +0800

clean the unittest2.

We have used the testtools instead of unittest2. So when we run
tempest, if it require unittest2 packages. We should look into
why it need unittest2, and can we use testtools instead? Not just
add unittest2 in pip-require simply. And new test added into
tempest should use testtools other than unittest2.

Change-Id: Ica02779b16434f9d64b0bb655c44251301b94492