revert env var removal

Author: razvan

rust/operator-binary/src/zk_controller.rs

@@ -893,6 +893,10 @@ fn build_server_rolegroup_statefulset(
                 create_vector_shutdown_file_command(STACKABLE_LOG_DIR),
         }])
         .add_env_vars(env_vars)
+        .add_env_var(
+            "CONTAINERDEBUG_LOG_DIRECTORY",
+            format!("{STACKABLE_LOG_DIR}/containerdebug"),
+        )
         // Only allow the global load balancing service to send traffic to pods that are members of the quorum
         // This also acts as a hint to the StatefulSet controller to wait for each pod to enter quorum before taking down the next
         .readiness_probe(Probe {