Python: Enable pinecone tests to run in CI

[awharrison-28]

Motivation and Context

The pinecone integration tests can run locally, but not in CI. CI has no way of picking up the pinecone environment.

Pinecone tests rely on the following environment variables in CI:

• Pinecone__ApiKey
• Pinecone__Environment

get_pinecone_config in test_pinecone.py currently only accounts for Pinecone__ApiKey

Description

This PR changes the method get_pinecone_config in test_pinecone.py to return the pinecone environment from an environment variable if the tests are being run in CI.

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows SK Contribution Guidelines (https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
• The code follows the .NET coding conventions (https://learn.microsoft.com/dotnet/csharp/fundamentals/coding-style/coding-conventions) verified with dotnet format
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄