Expose ZOOKEEPER_PORT in discovery CM (#675)

# Description

*Please add a description here. This will become the commit message of the merge request later.*

Author: sbernauer

CHANGELOG.md

@@ -7,6 +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]).
 
 ### Changed
 
@@ -17,6 +18,7 @@ All notable changes to this project will be documented in this file.
 [#672]: https://github.com/stackabletech/zookeeper-operator/pull/672
 [#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
 
 ## [23.4.0] - 2023-04-17
 

rust/operator-binary/src/discovery.rs

@@ -63,6 +63,7 @@ pub async fn build_discovery_configmaps(
     let mut discovery_configmaps = vec![build_discovery_configmap(
         zk,
         owner,
+        zookeeper_security,
         name.as_str(),
         &namespace,
         controller_name,
@@ -76,6 +77,7 @@ pub async fn build_discovery_configmaps(
         discovery_configmaps.push(build_discovery_configmap(
             zk,
             owner,
+            zookeeper_security,
             &format!("{}-nodeport", name),
             &namespace,
             controller_name,
@@ -95,6 +97,7 @@ pub async fn build_discovery_configmaps(
 fn build_discovery_configmap(
     zk: &ZookeeperCluster,
     owner: &impl Resource<DynamicType = ()>,
+    zookeeper_security: &ZookeeperSecurity,
     name: &str,
     namespace: &str,
     controller_name: &str,
@@ -138,6 +141,10 @@ fn build_discovery_configmap(
         .add_data("ZOOKEEPER", conn_str)
         // 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_security.client_port().to_string(),
+        )
         .add_data("ZOOKEEPER_CHROOT", chroot.unwrap_or("/"))
         .build()
         .context(BuildConfigMapSnafu)