systemd: disable CAP_WAKE_ALARM
In some systems where FreeIPA, AD accounts, SSSD etc is managing users, uid will be larger than 10000, which pam_systemd currently considers as a container user and it will not keep CAP_WAKE_ALARM capability with systemd-user instance. This means it will not be able to grant CAP_WAKE_ALARM to powerdevil and it will fail systemd unit with 218/EXIT_CAPABILITIES.
This disables CAP_WAKE_ALARM in powerdevil systemd unit, only if distribution is mobile focused, they can enable this as needed for use-case.