feat: Enable route_settings in default stage

[honglus]

Description

Enable route_settings in default stage
route_settings will override default_settings, So even I just want to set throttling_rate_limit on route "POST /test", I have to set the remaining variables to use default_route_settings values, otherwise it will be AWS default value not default_route_settings value. e.g detailed_metrics_enabled will become false.

• Enable route_settings and add only the route with at least one of the options:
  data_trace_enabled, logging_level, throttling_burst_limit, throttling_rate_limit, detailed_metrics_enabled is not null
• set the remaining variables to use use default_route_settings values

Motivation and Context

#78

Breaking Changes

No

How Has This Been Tested?

I have tested and deployed to my company AWS environment.

[antonbabenko]

Please verify and update examples/complete-http to work with proposed changes. Now I run it and got these errors:

╷
│ Error: error creating API Gateway v2 stage: NotFoundException: Unable to find Route by key GET /some-route within the provided RouteSettings
│ {
│   RespMetadata: {
│     StatusCode: 404,
│     RequestID: "0bedb742-75a3-43b4-975a-c0b0a986fd48"
│   },
│   Message_: "Unable to find Route by key GET /some-route within the provided RouteSettings"
│ }
│ 
│   with module.api_gateway.aws_apigatewayv2_stage.default[0],
│   on ../../main.tf line 63, in resource "aws_apigatewayv2_stage" "default":
│   63: resource "aws_apigatewayv2_stage" "default" {
│ 
╵
╷
│ Error: error creating API Gateway v2 route: BadRequestException: Invalid Route authorization type specified. Authorization Scopes are only valid for COGNITO_USER_POOLS and JWT authorization types
│ 
│   with module.api_gateway.aws_apigatewayv2_route.this["GET /some-route-with-authorizer-and-different-scope"],
│   on ../../main.tf line 121, in resource "aws_apigatewayv2_route" "this":
│  121: resource "aws_apigatewayv2_route" "this" {
│ 
╵
╷
│ Error: error creating API Gateway v2 route: BadRequestException: Invalid Route authorization type specified. Authorization Scopes are only valid for COGNITO_USER_POOLS and JWT authorization types
│ 
│   with module.api_gateway.aws_apigatewayv2_route.this["GET /some-route-with-authorizer-and-scope"],
│   on ../../main.tf line 121, in resource "aws_apigatewayv2_route" "this":
│  121: resource "aws_apigatewayv2_route" "this" {
│ 
╵

[honglus]

sorry, it is not easy for me to provision all resources in the example. Can you try

1. examples/complete-http is successful before the change.
2. try to pin AWS version to v4.25.0, which is the version I tested successfully for my company's resource.

[antonbabenko]

I am pretty sure that example worked before this PR. I will take a look into this PR during this week.

[antonbabenko]

This PR is included in version 2.2.0 🎉

[github-actions]

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