Support Terraform v0.15.0 / v1.0.0

[awsitcloudpro]

This repo is currently using Terraform (TF) v0.14.x or lower. It would be nice to use the latest TF version. I ran into a few issues when trying to do that - the terraform apply command errors out. I found that use of Terraform v0.15.0+ requires the following changes:

• Replace TF function map() by tomap().
• Update EKS module vesion to at least v15.2.0, to replace its internal use of list() by tolist().
• Update AWS provider version to at least v3.37.0, to support the Warm Pool support added by the EKS module v15.2.0.
• The source folder name can no longer be passed as an argument to the terraform init, plan, and apply commands.

[vara-bonthu]

#9 Added new release