Expose ZOOKEEPER_CLIENT_PORT in discovery CM (#676)

# Description

Fixup #675

Author: sbernauer

CHANGELOG.md

@@ -7,7 +7,7 @@ All notable changes to this project will be documented in this file.
 ### Added
 
 - Generate OLM bundle for Release 23.4.0 ([#672]).
-- Expose `ZOOKEEPER_PORT` in discovery CM ([#675]).
+- Expose `ZOOKEEPER_CLIENT_PORT` in discovery CM ([#675], [#676]).
 
 ### Changed
 
@@ -19,6 +19,7 @@ All notable changes to this project will be documented in this file.
 [#673]: https://github.com/stackabletech/zookeeper-operator/pull/673
 [#674]: https://github.com/stackabletech/zookeeper-operator/pull/674
 [#675]: https://github.com/stackabletech/zookeeper-operator/pull/675
+[#676]: https://github.com/stackabletech/zookeeper-operator/pull/676
 
 ## [23.4.0] - 2023-04-17
 

rust/operator-binary/src/discovery.rs

@@ -142,7 +142,7 @@ fn build_discovery_configmap(
         // Some clients don't support ZooKeeper's merged `hosts/chroot` format, so export them separately for these clients
         .add_data("ZOOKEEPER_HOSTS", hosts)
         .add_data(
-            "ZOOKEEPER_PORT",
+            "ZOOKEEPER_CLIENT_PORT",
             zookeeper_security.client_port().to_string(),
         )
         .add_data("ZOOKEEPER_CHROOT", chroot.unwrap_or("/"))