insights-client-3.1.3-2.el8_4.noarch fails with Fatal: No option 'proxy_hostname' in section: 'server' while registration

Issue

• insights-client --register fails with Fatal: No option 'proxy_hostname' in section: 'server' even if system is not behind proxy.

  # insights-client --register
  Fatal: No option 'proxy_hostname' in section: 'server'
  

• Ansible role to configure Red Hat Insights fails with below error:-

  TASK [../roles/insights-client : Change permissions of machine_id file so that Insights System ID can be read] ****************************************************
  task path: /appl/ao_linux/ansible-provision/playbooks/roles/insights-client/tasks/main.yml:43
  Monday 05 July 2021  14:07:22 +0100 (0:00:00.896)       0:00:10.765 ***********
  fatal: [xxxx]: FAILED! => {"changed": false, "msg": "file (/etc/insights-client/machine-id) is absent, cannot continue", "path": "/etc/insights-client/machine-id"}