Sets trusted time server.
PRL_RESULT PrlVmCfg_SetExpirationTrustedTimeServer( PRL_HANDLE hVmCfg, PRL_CONST_STR sUrl );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle was passed.
PRL_ERR_SUCCESS - function completed successfully.