Changelog:
============
- Support httpx2 in the test client
- Use httpx2 for type checking in the testclient module
- Add assert error for requires() when request param is not Request type
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
