Yum update on an AWS marketplace AMI results in 'This system is not registered with an entitlement server. You can use subscription-manager to register.' error

Issue

• Running yum commands in AWS marketplace images show 'This system is not registered with an entitlement server. You can use subscription-manager to register.' error all the time.

  # yum repolist
  Updating Subscription Management repositories.
  Unable to read consumer identity
  
  This system is not registered with an entitlement server. You can use "rhc" or "subscription-manager" to register.
  

• How to get rid of 'This system is not registered with an entitlement server. You can use subscription-manager to register.' error message in AWS marketplace AMIs.