CameraITS scene4 should be skipped if read_3a is not supported

Some cameras does not support read_3a.
The test should include its.caps.skip_unless(its.caps.read_3a(props))
when checking the camera properties.

(cherry-picked from 29cb19b774b6e0cb73851feb6877da5e42bba78e)

Change-Id: I601e264db5cccc71900e0c57baf9f852aedc5047
1 file changed