Suricata5 LOG_WARNING fix. Issue #10751

[vktg]

• Redmine Issue: https://redmine.pfsense.org/issues/10751
• Ready for review

Rename LOG_WARN to LOG_WARNING

https://www.php.net/manual/en/function.syslog.php:

Constant	Description
LOG_EMERG	system is unusable
LOG_ALERT	action must be taken immediately
LOG_CRIT	critical conditions
LOG_ERR	error conditions
**LOG_WARNING	warning conditions**
LOG_NOTICE	normal, but significant, condition
LOG_INFO	informational message
LOG_DEBUG	debug-level message

[bmeeks8]

I'm about ready to post the update to Suricata 5.0.3. That update will remove Barnyard2 from Suricata and also has a large number of other enhancements and fixes in it. I also pulled the changes from this request into mine, so let's just close this Pull Request with the knowledge that the fixes for LOG_WARN needing to be LOG_WARNING instead are carried over into the upcoming pfSense-pkg-suricata-5.0.3 update.