Add pipeline.ordered setting for docker image (elastic#13304)

Adds the pipeline.ordered setting to env2yml.go for the docker image.

Closes: elastic#13293
(cherry picked from commit 9f45087)

docker/data/logstash/env2yaml/env2yaml.go

@@ -58,6 +58,7 @@ func normalizeSetting(setting string) (string, error) {
 		"pipeline.unsafe_shutdown",
 		"pipeline.java_execution",
 		"pipeline.ecs_compatibility",
+		"pipeline.ordered",
 		"pipeline.plugin_classloaders",
 		"pipeline.separate_logs",
 		"path.config",