Install ansible without upper constraints
Install ansible without upper constraints

Ansible use jinja2 < 2.9, but requirements/upper-constraints.txt
requires jinja2===2.9.5. Installing ansible shouldn't use upper
constraints provides by OpenStack.

Change-Id: Ib37e8d06373a61959b41b8737085d5f001650e42

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible