Make swssconfig status FATAL when it fails (#1009)

* Make supervisor controlled one-shot program autorestart 0 time, so the status will become FATAL instead of EXITED if failure happens

Signed-off-by: Qi Luo <qiluo-msft@users.noreply.github.com>

* Make swssconfig.sh strictly exit on any failure

Signed-off-by: Qi Luo <qiluo-msft@users.noreply.github.com>

* Tune startretries, tested in supervisor 3.3.2-1

Signed-off-by: Qi Luo <qiluo-msft@users.noreply.github.com>

dockers/docker-orchagent/supervisord.conf

@@ -55,7 +55,8 @@ stderr_logfile=syslog
 command=/usr/bin/swssconfig.sh
 priority=7
 autostart=false
-autorestart=false
+autorestart=unexpected
+startretries=0
 stdout_logfile=syslog
 stderr_logfile=syslog
 

dockers/docker-orchagent/swssconfig.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 function config_acl {
     if [ -f "/etc/sonic/acl.json" ]; then
         mkdir -p /etc/swss/config.d/acl