fp2: add get_credential failure handling

[hdlee27]

Check all that apply

Type of Change

• WWST Certification Request
  • If this is your first time contributing code:
    • I have reviewed the README.md file
    • I have reviewed the CODE_OF_CONDUCT.md file
    • I have signed the CLA
  • I plan on entering a WWST Certification Request or have entered a request through the WWST Certification console at developer.smartthings.com
• Bug fix
• New feature
• Refactor

Checklist

• I have performed a self-review of my code
• I have commented my code in hard-to-understand areas
• I have verified my changes by testing with a device or have communicated a plan for testing
• I am adding new behavior, such as adding a sub-driver, and have added and run new unit tests to cover the new behavior

Description of Change

When 403 error occurs after get_credential during device registration, the driver is waiting for socket timeout to occur while calling fill_body().

In the event of a 403 error, there is no need to fill the body, so in this case, the fill_body() is not called and treated as an error so that a quick return can be made.

This will help users with multiple devices quickly register their devices.

In addition, the log was changed more clearly when get_creditial failed.

Summary of Completed Tests

complete fp2 registration test on V3

[github-actions]

Test Results

   64 files    400 suites   0s ⏱️
1 989 tests 1 989 ✅ 0 💤 0 ❌
3 429 runs  3 429 ✅ 0 💤 0 ❌

Results for commit a110475.

[github-actions]

Minimum allowed coverage is 90%

Generated by 🐒 cobertura-action against a110475

[github-actions]

Invitation URL:
https://bestow-regional.api.smartthings.com/invite/Pw2DpVNKbE23