Run containerdebug as a background job

See stackabletech/issues#527

Author: nightkr

rust/operator-binary/src/zk_controller.rs

@@ -871,6 +871,7 @@ fn build_server_rolegroup_statefulset(
             {COMMON_BASH_TRAP_FUNCTIONS}
             {remove_vector_shutdown_file_command}
             prepare_signal_handlers
+            containerdebug --loop &
             bin/zkServer.sh start-foreground {STACKABLE_RW_CONFIG_DIR}/zoo.cfg &
             wait_for_termination $!
             {create_vector_shutdown_file_command}