postconfigure upgrade failed - user running on Amazon AMI not using the Amazon AWS CLI Tools

Customer report an postConfigure failure during an upgrade. I was able to reproduce it.

Customer info:

They did initial install using postConfigure like this:

postConfigure -d -qm -pm-ip-addrs $(dig pm1 +short),$(dig pm2 +short) -um-ip-addrs $(dig um1 +short),$(dig um2 +short)

When when they tried to do an upgrade, they got the below error:

postConfigure -u

This is the MariaDB ColumnStore System Configuration and Installation tool.
It will Configure the MariaDB ColumnStore System and will perform a Package
Installation of all of the Servers within the System that is being configured.
:
NOTE: Amazon AWS CLI Tools are installed and allow MariaDB ColumnStore
to create Instances and EBS Volumes

Do you want to have ColumnStore use the Amazon AWS CLI Tools [y,n] >

Error: No IAM Profile with Security Certificates used or AWS CLI Certificate file configured
Check Amazon Install Documenation for additional information, exiting...