sonic-net/sonic-buildimage#16466 fixing based on review comments:

To move saidump.sh from this repo to sairedis repo.

syncd/scripts/saidump.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+set -e
+
+function debug()
+{
+  /usr/bin/logger "$1"
+}
+
+save_saidump_by_rdb() {
+  local filepath="/var/run/redis/sonic-db/database_config.json"
+
+  #Get hostname, port, redis directory
+  local redis_config=$(python3 -c "
+import json
+with open('$filepath') as json_file:
+  data = json.load(json_file)
+  print(data['INSTANCES']['redis']['hostname'], data['INSTANCES']['redis']['port'], data['INSTANCES']['redis']['unix_socket_path'])")
+
+  #split
+  redis_config=(${redis_config// / })
+  local hostname=${redis_config[0]}
+  local port=${redis_config[1]}
+  local redis_dir=`dirname ${redis_config[2]}`
+  debug "saidump.sh: hostname:$hostname, port:$port, redis_dir:$redis_dir"
+
+  debug "saidump.sh: [1] Config Redis consistency directory."
+  redis-cli -h $hostname -p $port CONFIG SET dir $redis_dir > /dev/null
+
+  debug "saidump.sh: [2] SAVE."
+  redis-cli -h $hostname -p $port SAVE > /dev/null
+
+  debug "saidump.sh: [3] Run rdb command to convert the dump files into JSON files."
+  rdb --command json  $redis_dir/dump.rdb | tee $redis_dir/dump.json > /dev/null
+
+  debug "saidump.sh: [4] Run saidump -r to update the JSON files' format as same as the saidump before. Then we can get the saidump's result in standard output."
+  saidump -r $redis_dir/dump.json -m 100
+
+  debug "saidump.sh: [5] Clear the temporary files."
+  rm -f $redis_dir/dump.rdb
+  rm -f $redis_dir/dump.json
+}
+
+save_saidump_by_rdb