[rsyslog] Suppress duplicate messages from base image and all Docker containers (#2497)

Author: jleveque

dockers/docker-base/etc/rsyslog.conf

@@ -70,6 +70,10 @@ $WorkDirectory /var/spool/rsyslog
 #
 $IncludeConfig /etc/rsyslog.d/*.conf
 
+#
+# Suppress duplicate messages and report "message repeated n times"
+#
+$RepeatedMsgReduction on
 
 ###############
 #### RULES ####

files/image_config/rsyslog/rsyslog.conf.j2

@@ -64,6 +64,10 @@ $WorkDirectory /var/spool/rsyslog
 #
 $IncludeConfig /etc/rsyslog.d/*.conf
 
+#
+# Suppress duplicate messages and report "message repeated n times"
+#
+$RepeatedMsgReduction on
 
 ###############
 #### RULES ####

platform/p4/docker-sonic-p4/Dockerfile.j2

@@ -71,7 +71,6 @@ RUN sed -ri 's/^(save .*$)/# \1/g;
             ' /etc/redis/redis.conf
 
 ADD port_config.ini /port_config.ini
-ADD rsyslog.conf /etc/rsyslog.conf
 COPY ["start.sh", "orchagent.sh", "config_bm.sh", "/usr/bin/"]
 COPY ["supervisord.conf", "/etc/supervisor/conf.d/"]
 COPY ["files/configdb-load.sh", "/usr/bin/"]