fix(py_image_layer): resolve symlinks in mtree specs to preserve them in tar layers (#567)#892

mishas wants to merge 2 commits intoaspect-build:mainaspect-build/rules_py:mainfrom

mishas:misha/fix-567-py-image-layer-symlinksmishas/aspect_rules_py:misha/fix-567-py-image-layer-symlinksCopy head branch name to clipboard