🐛 Only apply new or changed tags to EC2 and EKS objects

[AndiDog]

What type of PR is this?

/kind bug

What this PR does / why we need it:

When creating or updating tags, CAPA currently sends all tags including unchanged ones. That can lead to alert of scanning tools if they forbid a certain tag from being modified, or IAM policies may deny such changes directly. By sending only the new or changed tags (here, CAPA doesn't delete tags, by the way), this can be avoided and requests become smaller. I've also added a test for the actual AWS API calls because we didn't have that behavior covered yet.

Checklist:

• squashed commits
• includes documentation
• includes emoji in title
• adds unit tests
• adds or updates e2e tests

Release note:

Only apply new or changed tags to EC2 and EKS objects

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign fabriziopandini for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[k8s-ci-robot]

@AndiDog: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-provider-aws-test	25a4781	link	true	/test pull-cluster-api-provider-aws-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.