fix ocp-workshop report when user has 'become=True' in its ansible config

The report generation failed for openshiftbu-mgr user:

TASK [get repo version used to deploy] *****************************************
fatal: [localhost]: FAILED! => {"changed": false, "failed": true, "module_stderr": "sudo: a password is required\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 1}
        to retry, use: --limit @/tmp/ocp-workshop-xxtestnoe3xx/ansible_agnostic_deployer/ansible/main.retry

This is because become=True is set in ~/.ansible.cfg.

Force 'become: false' for 'localhost' play.