Waiting for privilege escalation prompt
You don't need to be a privileged user (in your local machine) in order to execute Ansible playbook.
When using become, Ansible allows you to ‘become’ another user, different from the user that logged into the machine (remote user).
For more details see Understanding Privilege Escalation
In your inventory of hosts /etc/ansible/host you have specified a group of IPs with root user while you are specifying a remote_user: ronenal in your playbook.
So you need to run ansible-playbook with --ask-become-pass or -K.