insights-client is throwing "No option 'no_proxy' in section: 'server'" during registration due to which registration fails with "401 Unauthorized".

Issue

• insights-client --register fails with No option 'no_proxy' in section: 'server' during registration due to which registration eventually fails with HTTP Status: 401 Unauthorized.

  # insights-client --register
  Unable to fetch egg url https://cert-api.access.redhat.com/r/insights/platform/module-update-router/v1/channel?module=insights-core: 401: Unauthorized. Defaulting to /release
  Please ensure that the system is registered with RHSM for CERT auth, or that correct credentials are set in /etc/insights-client/insights-client.conf for BASIC auth.
  Machine-id found, insights-client can not be registered. Please, unregister insights-client first: `insights-client --unregister`
  

  2024-01-26 09:57:30,058    DEBUG insights.client.auto_config Trying to autoconfigure...
  2024-01-26 09:57:30,071    DEBUG insights.client.auto_config Checking if system is subscription-manager registered
  2024-01-26 09:57:30,072    DEBUG insights.client.auto_config System is subscription-manager registered
  2024-01-26 09:57:30,072    DEBUG insights.client.auto_config No option 'no_proxy' in section: 'server'
  2024-01-26 09:57:30,072    DEBUG insights.client.auto_config System is NOT subscription-manager registered