PROBLEM (see #487)
- ET rule files start with the "emerging-*" prefix;
- ETPRO rule files do not start with that prefix.
SOLUTION
Concatenate all rule files, with the exception of "*disabled.rules",
into a single rule file at "/etc/suricata/rules/tpotce.rules"
I have left as-is the "sed" command that enables all commented-out
rules. Since that is usually done for performance reasons, maybe it
could be turned into a configuration option like the OINKCODE.
Another thing worth considering is to use "suricata-update" instead:
https://suricata-update.readthedocs.io/en/latest/quickstart.html