/usr/lib/linux-tools/4.18.0-1013-azure/cpupower is in linux-tools-4.18.0-1013-azure 4.18.0-1013.13~18.04.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/4.18.0-1013-azure/../../linux-azure-tools-4.18.0-1013/cpupower