nixos/opensearch: fix opensearch startup

              # java.security.AccessControlException:

              # access denied ("java.io.FilePermission" "/var/lib/opensearch/config/opensearch.yml" "read")

              rm -f ${configDir}/opensearch.yml

              cp ${opensearchYml} ${configDir}/opensearch.yml

              # Make sure the logging configuration for old OpenSearch versions is removed:

              rm -f "${configDir}/logging.yml"

              rm -f ${configDir}/${loggingConfigFilename}

              cp ${loggingConfigFile} ${configDir}/${loggingConfigFilename}

              mkdir -p ${configDir}/scripts

              rm -f ${configDir}/jvm.options

              cp ${cfg.package}/config/jvm.options ${configDir}/jvm.options

              # redirect jvm logs to the data directory