[CI] Use ss instead of netstat

In case of rabbitmq container is unhealthy
let's use `ss` command instead of `netstat` as
``netstat`` is not present in distros anymore and
in containers we already have iproute2 [debian/ubuntu]
and iproute [rhel based] package installed.

[1] https://zuul.opendev.org/t/openstack/build/c70df1ecb52841579207c26cdc159327

+ echo 'rabbitmq - netstat -an'
rabbitmq - netstat -an
+ sudo docker exec rabbitmq netstat -an
OCI runtime exec failed: exec failed: unable to start container process: exec: "netstat": executable file not found in $PATH: unknown

Change-Id: I8417545735ea02d14dc1f83e18aa75b94213f814

tests/check-failure.sh

@@ -34,8 +34,8 @@ check_podman_unhealthies() {
         echo "Discovered unhealthy container: $container"
         echo "$container - ps axwuf"
         sudo podman exec $container ps axwuf
-        echo "$container - netstat -an"
-        sudo podman exec $container netstat -an
+        echo "$container - ss -an"
+        sudo podman exec $container ss -an
     done
 }
 
@@ -73,8 +73,8 @@ check_docker_unhealthies() {
         echo "Discovered unhealthy container: $container"
         echo "$container - ps axwuf"
         sudo docker exec $container ps axwuf
-        echo "$container - netstat -an"
-        sudo docker exec $container netstat -an
+        echo "$container - ss -an"
+        sudo docker exec $container ss -an
     done
 }