Update to utilize new multi-tenancy approach

[jordanpadams]

💡 Description

• update API library
• Demo registry-api with new opensearchclient #422
• Demo partial implementation on AWS #423
• Partial implementation of the opensearch serverless queries #470
• API Upgrade Tasks to utilize Amazon OpenSearch Serverless #424

[tloubrieu-jpl]

I am starting the development to use OpenSearchClient object instead of RestHighLevelClient.
We will need that to connect to AWS OpenSearch Serverless.

[tloubrieu-jpl]

I am now block by this ticket on the java OpenSearchClient side opensearch-project/opensearch-java#377.
Without that development, we need a java object to deserialize the documents in the database.

[tloubrieu-jpl]

I realize we can use a generic object like HashMap to deserialize the OpenSearch document.
I am moving forward with that. I was hoping to have an endpoint running with the new SDK locally today but I am still debugging that.

[jordanpadams]

@tloubrieu-jpl status: unblocked 🎉 . marching forward now. 🤞 test endpoint ready for next week.

[tloubrieu-jpl]

test endpoint works.

[tloubrieu-jpl]

Unable to access the registry-api deployed on MCP/ECS through Load Balancer. Currently blocked by that, can discuss at the breakout or tag up scheduled tomorrow.