ansible>=2.7.5
jinja2>=2.7
colorlog>=2.6.1
gitpython>=2.0.8

ansible>=2.4.3.0
jinja2>=2.7
colorlog>=2.6.1
gitpython>=2.0.8

Downgrade Ansible back to 2.4
Downgrade Ansible back to 2.4

Since IR stable branch is still using 2.4 version.

Change-Id: I1e15b175718a5b4fc2b1599dc0f7137c9d6fab08
