The clusteriocontroller and clusteriohost scripts don't use camelCase so the process title set by these scripts shouldn't use it either.
This code is no longer functional after the master/slave rename and has served its purpose to migrate the exsting logs to the new format.
The role of a slave as a host for Factorio servers is not well reflected in its name and has caused confusion among users. Rename slave to host to better reflect its role as a host of Factorio servers.
Hornwitser