feat: Add variable cluster_primary_security_group_tags for cluster primary security group tags

[balonik]

Description

Add new input variable cluster_primary_security_group_tags to specifically set cluster primary security group tags.

Motivation and Context

Alternative to #2249 which was later reverted in #2250.

I am trying to apply AWS provider default tags on Cluster primary security group, I have used cluster_tags with data.aws_default_tags data source. But this is causing tags changes to be planned/applied every run, because of hashicorp/terraform-provider-aws#18311 and fact that cluster_tags is also used in aws_eks_cluster resource. Using dedicated variable I can do something like:

cluster_primary_security_group_tags = data.aws_default_tags.current.tags instead of cluster_tags = data.aws_default_tags.current.tags.

Having a dedicated variable also helps in cases where tags on EKS cluster and SG must differ.

Next step would be to remove var.cluster_tags from the SG.

Breaking Changes

N/A

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request

[bryantbiggs]

as stated in #2577, this is not a change we are going to support at this time

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.