Introduction
EC2 instance that is launched with Amazon Linux AMI will come up with ec2-user and you can only SSH into that instance with Private Key.
Need
We wanted an Amazon Linux AMI (Base Image) with default username (similar to ec2-user) and that should allow SSH login with a password.
SSH login with a password is also a requirement for authenticating user login with OpenLDAP Server. That way our IT Operations need not remember new login information. They can use their existing logins.
Solution