AWS API Gateway: Allow stage customization

[nl-brett-stime]

Use case description

API Gateway has a feature to manage different stages (dev/qa/prod). However, some users have their stages split across different AWS accounts. Other users may manage stages via IaC tools such as Cloud Formation, Terraform and Serverless. In these cases, API Gateway's stage feature becomes redundant: https://stackoverflow.com/a/53652722/93345

Proposed solution

Allow the stage value sent to API Gateway to differ from Serverless' stage but fall back to Serverless' stage as a default value.

E.g.,

  provider:
  name: aws
  stage: ${opt:stage, 'dev'}
  apiGateway:
    stage: aValueThatDiffersFromTheOneAbove

[medikoo]

@nl-brett-stime sounds reasonable to me

[pavanandhukuri]

@medikoo I would like to pick this up if it is already not done. Can you assign it to me?

[medikoo]

@pavanandhukuri sure. PR's welcome!

[pavanandhukuri]

Raised a PR #11487

[pavanandhukuri]

@medikoo I missed tagging the PR with Closes comment.. I think we will have to close this issue manually now...

[medikoo]

@pavanandhukuri indeed, thanks for reminder!