provider/aws: Add import support for API Gateway proxy integrations

[Vinnl]

(I wasn't sure if I had to create separate issues for all of these - most of them are only useful together with some of the others. If you prefer separate issues, do let me know.)

Terraform Version

At least up to v0.8.7

Affected Resource(s)

The following resources are required to set up a proxy integration with an AWS Lambda function for API Gateway, and do not support importability yet:

• aws_api_gateway_resource
• aws_api_gateway_method
• aws_api_gateway_integration
• aws_lambda_permission
• aws_api_gateway_method_response
• aws_api_gateway_integration_response
• aws_api_gateway_deployment

Expected Behavior

Running the import command for these resources should update the state.

Actual Behavior

Message resource <resource> doesn't support import.

[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.