Improvements for adcli update and join
adcli join should now be able to join a domain with an account which is only allowed to join computers.
adclu update should now only add or modify attributes which are explicitly given on the command line.
With the new option trusted-for-delegation the trusted-for-delegation flag of the computer account can be set and the new options add-service-principal/remove-service-principal can be used to add service principals for alias names.