* run terraform upgrade tool
* fix post upgrade TODOs
* use strict typing for variables
* upgrade examples, point them at VPC module tf 0.12 PR
* remove unnecessary `coalesce()` calls
coalesce(lookup(map, key, ""), default) -> lookup(map, key, default)
* Fix autoscaling_enabled broken (#1)
* always set a value for tags, fix coalescelist calls
* always set a value for these tags
* fix tag value
* fix tag value
* default element available
* added default value
* added a general default
without this default - TF is throwing an error when running a destroy
* Fix CI
* Change vpc module back to `terraform-aws-modules/vpc/aws` in example
* Update CHANGELOG.md
* Change type of variable `cluster_log_retention_in_days` to number
* Remove `xx_count` variables
* Actual lists instead of strings with commas
* Remove `xx_count` variable from docs
* Replace element with list indexing
* Change variable `worker_group_tags` to a attribute of worker_group
* Fix workers_launch_template_mixed tags
* Change override_instance_type_x variables to list.
* Update CHANGELOG.md
* Adding new mixed type of worker group with instance overrides and mixed instances policy
* moving all count and lifecycle rule parameters to top/bottom
* adding custom IAM parts
* updating doc with new options
* fixes for spot instances
awsRegion missing in example.
It's not working without it.
And added cloudProvider setting.
It's by default "aws" and not necessary at the moment. But it's to important and should be defined if default will change in the future.
