Display/IGT: Move IGT to a common place for xTS testing am: 310ed13f16

Original change: https://android-review.googlesource.com/c/platform/platform_testing/+/3495270

Change-Id: Iadeac75963ff1f6d1b43acc4d810bc2f99ea7b0e
Signed-off-by: Automerger Merge Worker <[email protected]>