Update Terraform cloudposse/iam-s3-user/aws module initialization - a…

[andrelohmann]

…dded iam_access_key_max_age parameter

what

• iam_access_key_max_age was added to the variables.tf file as a copy from cloudposse/iam-system-user/aws module
• iam_access_key_max_age is handed over as a parameter in cloudposse/iam-s3-user/aws module instatiation
• the next cloudposse/iam-s3-user/aws version is just guessed by an open PR, created in the same context

why

• iam_access_key_max_age defaults to 30 days now on cloudposse/iam-system-user/aws
• when this module is updated, this leads to a recreation of the s3 user with an expired Access Key

references

• PR on cloudposse/terraform-aws-iam-s3-user