[jaeger-v2] Add support for Opensearch (#5257)

## Which problem is this PR solving?
- part of #4843

## Description of the changes
- Added OpenSearch support in jaeger-V2.
- Reused the existing Elasticsearch factory for OpenSearch.

## How was this change tested?
- tested locally by running jaeger-v2 with newly added opensearch
config-file.
- Run the opensearch container:
```bash
docker run --rm --name opensearch -p 9200:9200 -e "discovery.type=single-node" opensearchproject/opensearch:1.3.0
```
- Execute below to run jaeger-V2
```bash
go run -tags=ui ./cmd/jaeger/. --config ./cmd/jaeger/config-opensearch.yaml
```

## Checklist
- [x] I have read
https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
- [x] I have signed all commits
- [] I have added unit tests for the new functionality
- [x] I have run lint and test steps successfully
  - for `jaeger`: `make lint test`
  - for `jaeger-ui`: `yarn lint` and `yarn test`

---------

Signed-off-by: Harshvir Potpose <hpotpose62@gmail.com>
Signed-off-by: Harshvir Potpose <122517264+akagami-harsh@users.noreply.github.com>

cmd/jaeger/config-opensearch.yaml

@@ -0,0 +1,54 @@
+service:
+  extensions: [jaeger_storage, jaeger_query]
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [jaeger_storage_exporter]
+
+extensions:
+  jaeger_query:
+    trace_storage: os_main
+    trace_storage_archive: os_archive
+    ui_config: ./cmd/jaeger/config-ui.json
+
+  jaeger_storage:
+    opensearch:
+      os_main:
+        server_urls: https://localhost:9200
+        log_level: "error"
+        index_prefix: "jaeger-main"
+        use_aliases: true
+        username: "admin"
+        password: "admin"
+        tls:
+          enabled: true
+          skip_host_verify: true
+        tags_as_fields:
+          all: true
+
+      os_archive:
+        server_urls: https://localhost:9200
+        log_level: "error"
+        index_prefix: "jaeger-archive"
+        use_aliases: true
+        username: "admin"
+        password: "admin"
+        tls:
+          enabled: true
+          skip_host_verify: true
+        tags_as_fields:
+          all: true
+
+receivers:
+  otlp:
+    protocols:
+      grpc:
+      http:
+
+processors:
+  batch:
+
+exporters:
+  jaeger_storage_exporter:
+    trace_storage: os_main

cmd/jaeger/internal/extension/jaegerstorage/config.go

@@ -19,6 +19,7 @@ type Config struct {
 	Memory        map[string]memoryCfg.Configuration    `mapstructure:"memory"`
 	Badger        map[string]badgerCfg.NamespaceConfig  `mapstructure:"badger"`
 	GRPC          map[string]grpcCfg.Configuration      `mapstructure:"grpc"`
+	Opensearch    map[string]esCfg.Configuration        `mapstructure:"opensearch"`
 	Elasticsearch map[string]esCfg.Configuration        `mapstructure:"elasticsearch"`
 	Cassandra     map[string]cassandraCfg.Configuration `mapstructure:"cassandra"`
 	// TODO add other storage types here

cmd/jaeger/internal/extension/jaegerstorage/extension.go

@@ -130,6 +130,12 @@ func (s *storageExt) Start(ctx context.Context, host component.Host) error {
 		cfg:         s.config.Elasticsearch,
 		builder:     es.NewFactoryWithConfig,
 	}
+	osStarter := &starter[esCfg.Configuration, *es.Factory]{
+		ext:         s,
+		storageKind: "opensearch",
+		cfg:         s.config.Opensearch,
+		builder:     es.NewFactoryWithConfig,
+	}
 	cassandraStarter := &starter[cassandraCfg.Configuration, *cassandra.Factory]{
 		ext:         s,
 		storageKind: "cassandra",
@@ -142,6 +148,7 @@ func (s *storageExt) Start(ctx context.Context, host component.Host) error {
 		badgerStarter.build,
 		grpcStarter.build,
 		esStarter.build,
+		osStarter.build,
 		cassandraStarter.build,
 		// TODO add support for other backends
 	}