message: feat: use env var to set the lagoon-opensearch-sync client secret
  Only set if the environment variable is actually defined.
diff: @@ -27,6 +27,11 @@ function sync_client_secrets {
  SERVICE_API_CLIENT_ID=$(/opt/jboss/keycloak/bin/kcadm.sh get -r ${KEYCLOAK_REALM:-master} clients?clientId=service-api --config $CONFIG_PATH | jq -r '.[0]["id"]')
  /opt/jboss/keycloak/bin/kcadm.sh update clients/$SERVICE_API_CLIENT_ID -s secret=$KEYCLOAK_SERVICE_API_CLIENT_SECRET --config $CONFIG_PATH -r ${KEYCLOAK_REALM:-master}
  +
  + if [ "$KEYCLOAK_LAGOON_OPENSEARCH_SYNC_CLIENT_SECRET" ]; then
  + LAGOON_OPENSEARCH_SYNC_CLIENT_ID=$(/opt/jboss/keycloak/bin/kcadm.sh get -r "${KEYCLOAK_REALM:-master}" clients?clientId=lagoon-opensearch-sync --config "$CONFIG_PATH" | jq -r '.[0]["id"]')
  + /opt/jboss/keycloak/bin/kcadm.sh update "clients/$LAGOON_OPENSEARCH_SYNC_CLIENT_ID" -s "secret=$KEYCLOAK_LAGOON_OPENSEARCH_SYNC_CLIENT_SECRET" --config "$CONFIG_PATH" -r "${KEYCLOAK_REALM:-master}"
  + fi
  }
  ##############
  