Fix : Add integration tests for Rulesets

[sirijaibm]

PR summary

It’s a full integration test suite for IBM Cloud RulesetsV1, covering instance and zone rulesets.

Fixes: <! -- link to issue -->

PR Checklist

Please make sure that your PR fulfills the following requirements:

• The commit message follows the Angular Commit Message Guidelines.
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• New tests
• Build/CI related changes
• Documentation content changes
• Other (please describe)

What is the current behavior?

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[sirijaibm]

UTs:

>> PYTHONPATH=$(pwd) pytest test/unit/test_rulesets_v1.py
======================================================================= test session starts ========================================================================
platform darwin -- Python 3.13.5, pytest-8.4.1, pluggy-1.6.0
rootdir: /Users/sirija/Desktop/repos/public/networking-python-sdk
plugins: cov-2.12.1, rerunfailures-16.0.1
collected 153 items                                                                                                                                                

test/unit/test_rulesets_v1.py .............................................................................................................................. [ 82%]
...........................                                                                                                                                  [100%]

======================================================================= 153 passed in 0.83s ========================================================================

ITs:

>> PYTHONPATH=$(pwd) pytest test/integration/test_rulesets_v1.py                                             
======================================================================= test session starts ========================================================================
platform darwin -- Python 3.13.5, pytest-8.4.1, pluggy-1.6.0
rootdir: /Users/sirija/Desktop/repos/public/networking-python-sdk
plugins: cov-2.12.1, rerunfailures-16.0.1
collected 24 items                                                                                                                                                 

test/integration/test_rulesets_v1.py ........................                                                                                                [100%]

================================================================== 24 passed in 67.87s (0:01:07) ===================================================================