Pin dci-ansible to ansible-2.9
Pin dci-ansible to ansible-2.9

Later versions of ansible will use python3.8 which prevents us from
finding our dci modules.  This pins dci-ansible to ansible-2.9 until we
can rebuild all our dci modules for newer python.

Change-Id: Ib14f0a67763d45ca276f0b89932e68fec9aa0f0b

redhat-cip/dci-ansible,redhat-cip/dci-ansible