drm/ci: uprev IGT

Uprev IGT to the latest version, which includes a fix for the
writeback tests issue on MSM devices. Enable debugging for
igt-runner to log output such as 'Begin test' and 'End test'.
This will help identify which test causes system freeze or hangs.
Update xfails and add metadata header for each flake test.

Signed-off-by: Vignesh Raman <vignesh.raman@collabora.com>