Camera Fixture: Add logging of len shading ratio and x-y shift

BUG=None
TEST=Manually
1. Run factory_CameraPerformanceAls
2. Check 'Image shift X/Y' and 'Len shading ratio' in factory log

Change-Id: Ie6ebadf83b6cb1a2728518bea4599974e5bace23
Reviewed-on: https://gerrit.chromium.org/gerrit/50305
Reviewed-by: Choon Chng <choonc@google.com>
Reviewed-by: Tai-Hsu Lin <sheckylin@chromium.org>
Commit-Queue: Justin Chuang <jchuang@chromium.org>
Tested-by: Justin Chuang <jchuang@chromium.org>
2 files changed