Implement some missing xCAT functionality

[Obihoernchen]

• makedns like command for dnsmasq
• makentp like command for chronyd
• rsyslog configuration
• net.extraparams

[jjohnson42]

For makedns for dnsmasq, that would pretty much be confluent2hosts. However I'd suggest that other DNS solutions are desired, if for no other reason than some people having a 'home router' perception of dnsmasq, even if it is technically capable of the load. Beyond that there are some record types that may call for a full DNS server, even though confluent doesn't matter.