FIX: dns,enabled=1 fails to provision addon domain DNS (Validators\Dns)
FIX: exceptions throw within mute() or silence() lock state (Error Reporter)
FIX: get_records_raw() consistency. get_zone_data(), a dependent method, returns null on failure. get_records_raw() documentation states return type false on failure. Previously behavior converted to polysemic empty array that could be either an empty zone or failed transfer. (dns)
CHG: conditionally disable/terminate services (Validators\Mail)
CHG: cleanup PAM handler instantiation (Provisioning\Pam)
CHG: check if group exists prior to creation (GroupCreationTrait)
CHG: record_exists()- cache unreachable resolvers to avoid repeated timeouts (dns)