amazon: Govcloud and China now supports tag on creation

[rickard-von-essen]

Since Jul 5, 2018 all AWS regions, including govcloud and china supports tag on creation for EBS and EC2.

This allows us to remove all special code for delayed tagging introduced in #5841

[ghost]

This issue has been automatically migrated to hashicorp/packer-plugin-amazon#16 because it looks like an issue with that plugin. If you believe this is not an issue with the plugin, please reply to hashicorp/packer-plugin-amazon#16.

[ghost]

I'm going to lock this issue 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 similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.