Switch traceback to native in pytest

[galipremsagar]

Description

In cudf & cuml we have observed a ~10% to ~20% respectively speed up of pytest suite execution by switching pytest traceback to --native:

currently:

102474 passed, 2117 skipped, 902 xfailed in 892.16s (0:14:52)

--tb=short:

102474 passed, 2117 skipped, 902 xfailed in 898.99s (0:14:58)

--tb=no:

102474 passed, 2117 skipped, 902 xfailed in 815.98s (0:13:35)

--tb=native:

102474 passed, 2117 skipped, 902 xfailed in 820.92s (0:13:40)

This PR makes a similar change to cuxfilter repo.

xref: rapidsai/cudf#16851

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[AjayThorve]

Looks good, thanks!

[galipremsagar]

/merge

[AjayThorve]

/merge