Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABLE_TABLE (sonic-net#418)

Signed-off-by: Jipan Yang <jipan.yang@alibaba-inc.com>

Author: jipanyang

syncd/scripts/syncd_init_common.sh

@@ -46,8 +46,8 @@ function check_warm_boot()
 {
     # FIXME: if we want to continue start option approach, then we need to add
     #        code here to support redis database query.
-    # SYSTEM_WARM_START=`/usr/bin/redis-cli -n 4 hget "WARM_RESTART|system" enable`
-    # SERVICE_WARM_START=`/usr/bin/redis-cli -n 4 hget "WARM_RESTART|${SERVICE}" enable`
+    # SYSTEM_WARM_START=`/usr/bin/redis-cli -n 6 hget "WARM_RESTART_ENABLE_TABLE|system" enable`
+    # SERVICE_WARM_START=`/usr/bin/redis-cli -n 6 hget "WARM_RESTART_ENABLE_TABLE|${SERVICE}" enable`
     # SYSTEM_WARM_START could be empty, always make WARM_BOOT meaningful.
     # if [[ x"$SYSTEM_WARM_START" == x"true" ]] || [[ x"$SERVICE_WARM_START" == x"true" ]]; then
     #     WARM_BOOT="true"