caddy-frontend: Cleanup haproxy logs in rsyslogd

haproxy by itself provides good information, so there is no need to add
information from rsyslogd itself.

software/caddy-frontend/buildout.hash.cfg

@@ -118,4 +118,4 @@ md5sum = 9d6111a5d6bc07e708116ca331925241
 
 [template-rsyslogd-conf]
 _update_hash_filename_ = templates/rsyslogd.conf.in
-md5sum = 6f0fd930ffb3230b7e8c781f88693d69
+md5sum = a4135eec94d9febaf6fb51d885886175

software/caddy-frontend/templates/rsyslogd.conf.in

@@ -2,9 +2,12 @@ module(
   load="imuxsock"
   SysSock.Name="{{ socket }}")
 
-# Use traditional timestamp format.
-# To enable high precision timestamps, comment out the following line.
-$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
+# Just simply output the raw line without any additional information, as
+# haproxy emits enough information by itself
+# Also cut out first empty space in msg, which is related to rsyslogd
+# internal and end up cutting on 8k, as it's default of $MaxMessageSize
+template(name="rawoutput" type="string" string="%msg:2:8192%\n")
+$ActionFileDefaultTemplate rawoutput
 
 $FileCreateMode 0600
 $DirCreateMode 0700