Enhance Info Endpoints to Display Feature Flag Status

Description:

ADR: osdu/platform/system/lib/core/os-core-common#86

• Configured FeatureFlagState resolvers from Core-Common as Spring beans.
• Updated integration tests to verify all FFs are present in the /info endpoint response.
• Updated FF configuration classes to decouple them from the DpsHeader bean.

How to test:

Via int tests in the pipeline.

You may also test it by requesting the info endpoint.

Response for GC Indexer:

curl --location 'https://community.gcp.gnrg-osdu.projects.epam.com/api/indexer/v2/info'

{
	"groupId": "org.opengroup.osdu.indexer",
	"artifactId": "indexer-gc",
	"version": "0.29.0-SNAPSHOT",
	"buildTime": "2025-04-01T08:02:02.766Z",
	"branch": "trusted-feature-flag-info-endpoint",
	"commitId": "34e67958f52d9c9b74b564c20513517461d9076c",
	"commitMessage": "simplify tests update, undo spring migration",
	"connectedOuterServices": [
		{
			"name": "Redis-RedisCacheBuilder$2",
			"version": "7.2.7"
		},
		{
			"name": "Redis-RedisCacheBuilder$2",
			"version": "7.2.7"
		},
		{
			"name": "Redis-RedisCacheBuilder$2",
			"version": "7.2.7"
		},
		{
			"name": "ElasticSearch-osdu",
			"version": "8.15.3"
		},
		{
			"name": "ElasticSearch-second",
			"version": "8.15.3"
		}
	],
	"featureFlagStates": [
		{
			"name": "featureFlag.bagOfWords.enabled",
			"enabled": true,
			"partition": "osdu",
			"source": "dataPartition"
		},
		{
			"name": "featureFlag.bagOfWords.enabled",
			"enabled": false,
			"partition": "second",
			"source": "dataPartition"
		},
		{
			"name": "collaborations-enabled",
			"enabled": false,
			"partition": "osdu",
			"source": "dataPartition"
		},
		{
			"name": "collaborations-enabled",
			"enabled": false,
			"partition": "second",
			"source": "dataPartition"
		},
		{
			"name": "featureFlag.keywordLower.enabled",
			"enabled": true,
			"partition": "osdu",
			"source": "dataPartition"
		},
		{
			"name": "featureFlag.keywordLower.enabled",
			"enabled": false,
			"partition": "second",
			"source": "dataPartition"
		},
		{
			"name": "featureFlag.asIngestedCoordinates.enabled",
			"enabled": true,
			"partition": "osdu",
			"source": "dataPartition"
		},
		{
			"name": "featureFlag.asIngestedCoordinates.enabled",
			"enabled": false,
			"partition": "second",
			"source": "dataPartition"
		},
		{
			"name": "custom-index-analyzer-enabled",
			"enabled": true,
			"partition": "osdu",
			"source": "dataPartition"
		},
		{
			"name": "custom-index-analyzer-enabled",
			"enabled": true,
			"partition": "second",
			"source": "dataPartition"
		},
		{
			"name": "index-augmenter-enabled",
			"enabled": true,
			"partition": "osdu",
			"source": "dataPartition"
		},
		{
			"name": "index-augmenter-enabled",
			"enabled": true,
			"partition": "second",
			"source": "dataPartition"
		},
		{
			"name": "featureFlag.mapBooleanToString.enabled",
			"enabled": true,
			"partition": "osdu",
			"source": "dataPartition +  dataPartition"
		},
		{
			"name": "featureFlag.mapBooleanToString.enabled",
			"enabled": false,
			"partition": "second",
			"source": "dataPartition +  dataPartition"
		}
	]
}

Changes include:

• Refactor (a non-breaking change that improves code maintainability).
• Bugfix (a non-breaking change that solves an issue).
• New feature (a non-breaking change that adds functionality).
• Breaking change (a change that is not backward-compatible and/or changes current functionality).

Changes in:

• Common code

Dev Checklist:

• Added Unit Tests, wherever applicable.
• Updated the Readme, if applicable.
• Existing Tests pass
• Verified functionality locally
• Self Reviewed my code for formatting and complex business logic.

Other comments:

Indexer uses different sources to resolve feature flag configuration, thus I had to implement different resolvers to provide state for the info endpoint.