[Enhancement]: Modules use deprecated API calls

Module

Core

Proposal

While migrating the .NET modules, I compared some configurations with the Java implementation and noticed a few differences and deprecated APIs in the Java modules for MongoDB and Couchbase:

• MongoDB isMaster deprecated: https://www.mongodb.com/docs/v4.0/reference/command/isMaster/. I think it should be {hello:1}).isWritablePrimary instead.
• HTTP request POST /settings/web port value should be SAME.
• HTTP request POST /pools/default/buckets ramQuotaMB should be ramQuota.
• HTTP endpoint /pools/default/b/ does officially not exist anymore. I think it should be GET /pools/default/buckets/. The response body is a bit different. The list of services are in nodes/[0]/services. services is an arry no object anymore.
• The time when POST /settings/web is important, it starts provisioning a new single-node cluster which may interfere with other HTTP configuration calls.

No files or tests are named. Start by locating the Java MongoDB and Couchbase modules and comparing their configuration requests with the linked API documentation. Done means the deprecated MongoDB call and the listed Couchbase endpoints, parameter names, response handling, and request ordering are updated consistently.