Python: OpenAPI plugin enhance

[moonbox3]

Motivation and Context

Python's OpenAPI manager run_openapi_operation was hard-coded to use certain parameters that would ultimately be built up to make an API request. This didn't allow the model to know which parameters were actually defined as required in the OpenAPI spec and would cause errors during function calling.

Description

This PR does a quite major overhaul on the openapi manager, with the caveat that the code is going to be refactored / cleaned up in a next iteration (we're pressed for time right now). In the _create_function_from_operation method, the rest_operation_params are now built up from the operation which means we included the required parameters and will have them during function calling. This allows us to properly build up the url, headers, request body and paths to make the API call.

• The concept samples were updated and are functioning with this latest code.
• function calling was tested with the AzureKeyVault OpenAPI example and the model was able to automatically create a secret in a test key vault.
• Old unit tests were removed. Note: in the next iteration new unit tests for all of the new functionality will be added.
• In the next iteration, the entire openapi_manager.py file will be broken apart to separate files for classes/moels to clean it up.
• Closes Python: OpenAPI plugins don't correctly create kernel functions #6261

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[markwallace-microsoft]

Python 3.10 Test Coverage Report •

File	Stmts	Miss	Cover	Missing
semantic_kernel/connectors/openapi_plugin
openapi_manager.py	160	25	84%	17, 62–75, 105, 146, 151, 283, 313, 369–386
semantic_kernel/functions
kernel_function_from_method.py	85	4	95%	151–152, 158–159
TOTAL	5914	946	84%

Python 3.10 Unit Test Overview

Tests	Skipped	Failures	Errors	Time
1288	1 💤	0 ❌	0 🔥	16.781s ⏱️