ITS: use angle and 90+angle in opencv_processing_utils.py

files affected:
  utils/opencv_processing_utils.py

other changes:
  Absorb 0 degree into rotated test with use of '' suffix.
  Run all angles and report all FAILs at end.
  Use actual negative angles instead to remove abs() on angles.
  Eliminate 90 test as this is essentially 0 degree test.

bug: 196938527

Merged-In: I42bd9c791ad6ec149e172b0e6eb7e2ec76506664
Change-Id: I322465e7d449dc070f20819e95014d3b2cc4fb7b
1 file changed