fix(user_data): make `syslog_host_port` none mandatory
fix(user_data): make `syslog_host_port` none mandatory

since we are using diffrent ssh_transport, this param
can be None

scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests