start bgp_eoiu_mark service to populate bgp eoiu marker flags for war…

…m start, if configured so (sonic-net#3489)

* start bgp_eoiu_mark service to populate bgp eoiu marker if configured so

* Address code review comments: check db value via "-v" option in sonic-cfggen

* Address code review comment 2: check string against 'true' directly, instead of couting

* Update start.sh

dockers/docker-fpm-frr/start.sh

@@ -33,6 +33,13 @@ rm -f /var/run/rsyslogd.pid
 
 supervisorctl start rsyslogd
 
+# start eoiu pulling, only if configured so
+if [[ $(sonic-cfggen -d -v 'WARM_RESTART.bgp.bgp_eoiu') == 'true' ]]; then
+		supervisorctl start bgp_eoiu_marker
+fi
+
+supervisorctl start bgpcfgd
+
 # Start Quagga processes
 supervisorctl start zebra
 supervisorctl start staticd

dockers/docker-fpm-frr/supervisord.conf

@@ -75,3 +75,13 @@ autorestart=false
 startsecs=0
 stdout_logfile=syslog
 stderr_logfile=syslog
+
+[program:bgp_eoiu_marker]
+command=/usr/bin/bgp_eoiu_marker.py
+priority=7
+autostart=false
+autorestart=false
+startsecs=0
+startretries=0
+stdout_logfile=syslog
+stderr_logfile=syslog