Add support for getting logs from OPSI webservice
Description
Add an action in the OPSI server module to be able to list available logs and to get one of them.
Expected behavior
One action should allow to list which logs are available for a given target. A second one should allow to get one of them for a given target, with the maxSize parameter as in the OPSI API.
Benefits
See OPSI logs from FD See fd#5731