[bitnami/kafka] Kafka-Exporter can start with read only rootfs (#5932)

* fix(kafka) Kafka-Exporter doesn't start with read only rootfs

* Update bitnami/kafka/Chart.yaml

Co-authored-by: Carlos Rodríguez Hernández <carrodher1179@gmail.com>

Co-authored-by: Svetoslav Batchovski <sb@autom8.de>
Co-authored-by: Carlos Rodríguez Hernández <carrodher1179@gmail.com>
Co-authored-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>

bitnami/kafka/Chart.yaml

@@ -29,4 +29,4 @@ name: kafka
 sources:
   - https://github.com/bitnami/bitnami-docker-kafka
   - https://kafka.apache.org/
-version: 12.14.0
+version: 12.14.1

bitnami/kafka/templates/kafka-metrics-deployment.yaml

@@ -38,7 +38,6 @@ spec:
             - /bin/bash
             - -ec
             - |
-              read -r -a sasl_passwords <<< "$(tr ',;' ' ' <<< "${SASL_USER_PASSWORD}")"
               kafka_exporter \
               {{- range $i, $e := until $replicaCount }}
               --kafka.server={{ $fullname }}-{{ $i }}.{{ $fullname }}-headless.{{ $releaseNamespace }}.svc.{{ $clusterDomain }}:{{ $servicePort }} \
@@ -46,7 +45,7 @@ spec:
               {{- if (include "kafka.client.saslAuthentication" .) }}
               --sasl.enabled \
               --sasl.username="$SASL_USERNAME" \
-              --sasl.password="${sasl_passwords[0]}" \
+              --sasl.password="${SASL_USER_PASSWORD%%,*}" \
               {{- end }}
               {{- if (include "kafka.client.tlsEncryption" .) }}
               --tls.enabled \