/usr/share/doc/linux-cloud-tools-3.13.0-61-lowlatency/changelog.Debian.gz is in linux-cloud-tools-3.13.0-61-lowlatency 3.13.0-61.100.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-cloud-tools-3.13.0-61-lowlatency/../linux-cloud-tools-3.13.0-61/changelog.Debian.gz