/usr/lib/linux-tools/4.15.0-1022-azure/x86_energy_perf_policy is in linux-tools-4.15.0-1022-azure 4.15.0-1022.23.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/4.15.0-1022-azure/../../linux-azure-tools-4.15.0-1022/x86_energy_perf_policy