I made two modifications and I get syslog severity in EMC syslog events:
1 . Changed symbol of separator from <> to space :
#$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormatand replace it with:
# Use precise instead
$template precise,"%syslogpriority% %timegenerated% %HOSTNAME% %syslogtag% %msg%\n"
$ActionFileDefaultTemplate precise
2. Modified pattern for Log Manager Parameters -SYSLOG (Event View Manager) - added field %sevint% with separators \w to standard Ubuntu pattern :
%sevint%\w%month%\w%day%\w%time%\w%src%\w%info%
It works.
If there would be a possibility to use different patterns for device groups it would be useful. How to manage this issue?