Tag private subnets separately, like first 3 as app subnets and last 3 as data subnets

[apheera]

Is your request related to a new offering from AWS?

Is this functionality available in the AWS provider for Terraform? See CHANGELOG.md, too.

• Yes

Is your request related to a problem? Please describe.

I am creating 6 Private subnets and want to tag first 3 as app subnets and rest 3 as data subnets. How can I do that?

Describe the solution you'd like.

Either a separate tagging block based on subnet lookup or give capability to ignore tag changes within module so I can tag them separately.

Describe alternatives you've considered.

Described them above

Additional context

NA

[edas-smith]

Need this as well, though this PR should solve it : #901. But it has been open for over a year now