/usr/share/doc/linux-cloud-tools-4.15.0-1039-azure/changelog.Debian.gz is in linux-cloud-tools-4.15.0-1039-azure 4.15.0-1039.41~14.04.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-cloud-tools-4.15.0-1039-azure/../linux-azure-cloud-tools-4.15.0-1039/changelog.Debian.gz