Fix show queue counters to only run on default namespace (#3865)

What I did
show queue counters is supported and runs on host instance, even for mult-asic platforms.
We don't have to run show queue counters for each asic namespace.

This fixes #22394

How I did it
Modifiy generate_dump to call save_cmd instead of save_cmd_all_ns for show queue counters

How to verify it
Run show techsupport on multi-asic platform.
Verfiy that the queue.counters files show correct information.

Author: vishal-nokia

scripts/generate_dump

@@ -2074,7 +2074,7 @@ save_counter_snapshot() {
     save_cmd "echo $counter_t" "date.counter_$idx"
     save_cmd "show interface counters" "interface.counters_$idx"
     if ! $IS_SUPERVISOR; then
-       save_cmd_all_ns "show queue counters" "queue.counters_$idx"
+       save_cmd "show queue counters" "queue.counters_$idx"
     fi
     save_redis "COUNTERS_DB" "COUNTERS_DB_$idx"