refactor(fgs/function): using auto-gen style to replace old coding

[Lance52259]

What this PR does / why we need it:
Using auto-gen style to replace old coding.

Which issue this PR fixes:
(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged)
fixes #xxx

Special notes for your reviewer:

Release note:

1. using auto-gen style to replace old coding.

PR Checklist

• Tests added/passed.

make testacc TEST='./huaweicloud' TESTARGS='-run=TestAccSomethingV0_basic'
...
=== RUN   TestAccSomethingV0_basic
--- PASS: TestAccSomethingV0_basic (70.75s)
PASS
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud       70.796s

• Documentation updated.

• Schema updated.

• CheckDeleted.

  • a. During query operation (Read Context)
    aa. Resource not found
    >>>>>> Paste the screenshot here <<<<<<

  • b. During delete/disassociate/unbind operation (Delete Context)
    ba. Resource not found
    >>>>>> Paste the screenshot here <<<<<<

[github-actions]

This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.