[docker-iccpd]: use service dependency in supervisord to start services

Signed-off-by: Guohan Lu <lguohan@gmail.com>

dockers/docker-iccpd/start.sh

@@ -10,9 +10,3 @@ sonic-cfggen -d -t /usr/share/sonic/templates/iccpd.j2 > $ICCPD_CONF_PATH/iccpd.
 
 mkdir -p /var/sonic
 echo "# Config files managed by sonic-config-engine" > /var/sonic/config_status
-
-rm -f /var/run/rsyslogd.pid
-
-supervisorctl start rsyslogd
-
-supervisorctl start iccpd

dockers/docker-iccpd/supervisord.conf

@@ -3,21 +3,33 @@ logfile_maxbytes=1MB
 logfile_backups=2
 nodaemon=true
 
-[program:start.sh]
+[eventlistener:dependent-startup]
-command=/usr/bin/start.sh
+command=python -m supervisord_dependent_startup
-priority=1
 autostart=true
-autorestart=false
+autorestart=unexpected
-stdout_logfile=syslog
+startretries=0
-stderr_logfile=syslog
+exitcodes=0,3
+events=PROCESS_STATE
 
 [program:rsyslogd]
-command=/usr/sbin/rsyslogd -n
+command=/usr/sbin/rsyslogd -n -iNONE
-priority=2
+priority=1
 autostart=false
 autorestart=false
 stdout_logfile=syslog
 stderr_logfile=syslog
+dependent_startup=true
+
+[program:start]
+command=/usr/bin/start.sh
+priority=2
+autostart=false
+autorestart=false
+startsecs=0
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=rsyslogd:running
 
 [program:iccpd]
 command=/usr/bin/iccpd.sh
@@ -26,4 +38,5 @@ autostart=false
 autorestart=false
 stdout_logfile=syslog
 stderr_logfile=syslog
-                          
+dependent_startup=true
+dependent_startup_wait_for=start:exited