swh/alter: Update configmap for kafka notifications

Related to swh/infra/sysadm-environment#5606

swh/templates/alter/_helper-configmap.yaml

@@ -12,6 +12,11 @@
                                       "service" "restoration_storage"
                                       "configurationRef" .Values.alter.restorationStorageConfigurationRef
                                       "Values" .Values) | fromYaml | mustMerge $alterConfiguration -}}
+{{- if .Values.alter.journalWriterMirrorConfigurationRef }}
+{{- $alterConfiguration = include "swh.journalWriterConfiguration" (dict
+                                      "configurationRef" .Values.alter.journalWriterMirrorConfigurationRef
+                                      "Values" .Values) | fromYaml | mustMerge $alterConfiguration -}}
+{{- end }}
 
 {{- $removalSearches := (dict) -}}
 {{- range $searchName, $searchConfig := .Values.alter.removalSearches -}}

swh/values/default.yaml

@@ -483,3 +483,10 @@ graph:
             operator: In
             values:
             - "true"
+
+journalWriterMirrorConfiguration:
+  brokersConfigurationRef: kafkaBrokers
+  clientId: swh.alter.removals.${HOSTNAME}
+  prefix: swh.journal.mirror-notifications
+  producerConfig:
+    message.max.bytes: 1000000000

swh/values/staging/swh-cassandra.yaml

@@ -2371,6 +2371,7 @@ alter:
   inventoryStorageConfigurationRef: cassandraROStorageNoMaskingConfiguration
   graphConfigurationRef: alterGraphConfiguration
   restorationStorageConfigurationRef: rpcRWStorageConfiguration
+  journalWriterMirrorConfigurationRef: journalWriterMirrorConfiguration
   removalSearches:
     search:
       searchConfigurationRef: remoteSearchConfiguration