feat: added cloudsql serverless_export

[poligraph]

added serverless export for CloudSQL MySQL
https://cloud.google.com/blog/products/databases/introducing-cloud-sql-serverless-exports
according to API referencs
https://cloud.google.com/workflows/docs/reference/googleapis/sqladmin/v1/instances/export

[poligraph]

Dear @isaurabhuttam, could please review my PR? I currently use fork from main repo, but would like to use official.
Thanks.

[poligraph]

Dear @imrannayer could you please review my PR?

thanks.

[imrannayer]

@poligraph waiting for PR #523 merge. It has a fix needed for every PR.

[imrannayer]

/gcbrun

[imrannayer]

@poligraph is it possible to add a new example to test this feature?

[poligraph]

@imrannayer
not sure that I understood you correctly, but here is example,

  source                 = "github.com/terraform-google-modules/terraform-google-sql-db/modules/backup"
  enable_internal_backup = false
  use_serverless_export  = true
  export_schedule        = "00 4 * * *"
  export_uri             = "gs://cloudsql-db-backup"
  region                 = "europe-west2"
  scheduler_timezone     = "Etc/UTC"
  sql_instance           = "cloudsql-prod-db"
}

[imrannayer]

@poligraph I was wondering if you can add a new example with serverless export.

[poligraph]

@imrannayer understood, I have provided example (I use it currently in my project) -- is it enough? or need to add something ?

[imrannayer]

Can you plz add serverless export feature in this example. This example is executed as part of testing module

[imrannayer]

/gcbrun

[imrannayer]

/gcbrun

[poligraph]

@imrannayer I have updated example and Readme

[imrannayer]

/gcbrun

[imrannayer]

/gcbrun

[imrannayer]

/gcbrun

[imrannayer]

/gcbrun

[poligraph]

@imrannayer , I see that CI/CD check failed, but it was passed previously. Should I fix something, or it's an issue from another merges?

[imrannayer]

/gcbrun