Commands listed for manual STS creation IAM are using out of date OpenShift version (4.8) and should be updated to the current release 4.12

https://docs.openshift.com/rosa/rosa_architecture/rosa-sts-about-iam-resources.html#rosa-sts-account-wide-role-and-policy-aws-cli_rosa-sts-about-iam-resources

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1. navigate to https://docs.openshift.com/rosa/rosa_architecture/rosa-sts-about-iam-resources.html#rosa-sts-account-wide-role-and-policy-aws-cli_rosa-sts-about-iam-resources 
2. see example commands: 
aws iam create-role \
	--role-name ManagedOpenShift-Installer-Role \
	--assume-role-policy-document file://sts_installer_trust_policy.json \
	--tags Key=rosa_openshift_version,Value=4.8 Key=rosa_role_prefix,Value=ManagedOpenShift Key=rosa_role_type,Value=installer 
3. Customers may input an unsupported version from the example command.

example commands are for ROSA 4.8

example commands are for ROSA 4.12 (current)