Ansible failing while installing python-docker-py

[amoonakal]

While executing prerequisite.yml from install-from-bastion.sh, ansible installation fails at

TASK [Ensure openshift-ansible installer package deps are installed] attempts": 3, "changed": false, "msg": "No package matching 'python-docker-py' found available,

package python-docker-py fails getting installed.

As suggested by @zoobab though for centos, I tried adding the yum repo in one of the RHEL node , still python-docker-py doesnt get picked up on yum install.

Haven't done any changes to the codebase. Any suggestion pointers pls.