Set default api_version in requests

[khancode]

High Level Overview of Change

Set default api_version in requests if not supplied. Default api_version will use buildVersion of what server the client is connected to.

Context of Change

Type of Change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Refactor (non-breaking change that only restructures code)
• [ ] Tests (You added tests for code that already exists, or your new feature included in this PR)
• [ ] Documentation Updates
• [ ] Release

Did you update HISTORY.md?

• [ ] Yes
• [ ] No, this change does not impact library users

Test Plan